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• Jan. 22, 2020
• By Brian Edwards
• VegasInsider.com

Conor ‘The Notorious’ McGregor (22-4 MMA, 10-2 UFC) will make his return to the lightweight loop on Saturday night to headline UFC 257 in a rematch with Dustin ‘The Diamond’ Poirier at Fight Island in Abu Dhabi.

Mayweather vs McGregor odds: Vegas lines, prop bets. Bookies lay odds on Floyd Mayweather vs Conor McGregor UFC. Floyd Mayweather at his lowest odds against Conor McGregor. Against All Odds, Mayweather Versus McGregor Was a Good. Floyd Mayweather vs. Conor McGregor odds. The Odds; Odds Floyd Mayweather fights in the UFC in 2018: 9/2 (+450) Odds Floyd Mayweather and Conor McGregor ever fight in the UFC: 4/1 (+400) Odds Floyd Mayweather would beat Conor McGregor in a UFC fight: 149/1 (+14900) Odds Conor McGregor would stop Floyd Mayweather in the first minute of a UFC fight: 1/1 (+100). The fight people thought was nothing more than a pipe dream became a reality Wednesday: boxing great Floyd Mayweather vs. MMA superstar Conor McGregor, Aug. 26 from T-Mobile Arena in Las Vegas. Here are your Mayweather vs McGregor Odds. UFC Special Props: Who Will Conor McGregor Fight Next? UFC 205 Eddie Alvarez vs Conor McGregor Odds & Expert Pick; UFC 202 Diaz vs McGregor 2 Expert Betting Pick; How To Bet UFC 196 McGregor vs Diaz Odds; Best Picks for UFC 196 Diaz vs McGregor; UFC 196 Diaz vs McGregor Odds Analysis; UFC 197 Picks. Odds as of November 5 at Bovada. Here’s a look at some early prop bets for this bout as well: Floyd Mayweather Jr. Vs Tenshin Nasukawa. Floyd Mayweather Jr.150; Tenshin Nasukawa +110; Odds as of November 5 at BetOnline Will McGregor be in Attendance? Yes +500; No -1000; Odds as of November 5 at BetOnline Will Pacquiao be in Attendance? Yes +150; No -200.

At Friday’s weigh-ins, McGregor made championship weight by hitting the 155-pound mark.

This is not a title fight, though, so fighters are given a one-pound allowance. Therefore, the bout became official when Poirier tipped the scales at 156 pounds.

As of early Friday, most betting shops had McGregor listed as a favorite in the -300 to -350 neighborhood. The total was 2.5 rounds (‘under’ -175, ‘over’ +140), but a few shops were using 1.5 rounds (‘over’ 138, ‘under’ +105).

For bettors who are bullish on McGregor but don’t want to risk a straight price North of -300, there are other options. The proposition bet for the legendary Irish superstar to win by KO/TKO is priced in the -175 to -200 range.

McGregor vs. Poirier 2 - Odds Comparison

UFC 257 Odds Analysis | UFC 257 Odds

• Date: Saturday, Jan. 23, 2021
• TV-Time:ESPN/ESPN+, ESPN PPV 6:00 p.m. ET
• Venue: Etihad Arena
• Location: Abu Dhabi, United Arab Emirates
• Expected Fights: 11

UFC 257
Main Card Picks

Welterweight Bout
Conor McGregor vs. Dustin Poirier

McGregor and Poirier squared off on the main card at UFC 178 in Las Vegas when both fighters were featherweights back on Sept. 27 of 2014. Oddsmakers opened Poirier as a -225 favorite, but McGregor ended up closing as a -250 ‘chalk.’

Unlike this week when both fighters have been extremely cordial to each other, there was animosity galore going into their previous scrap. At the UFC 257 presser on Thursday, McGregor complimented Poirier on his many accomplishments, interrupting a media member’s question to start a conversation with his opponent.

Poirier (26-6-0-1 MMA, 18-5-0-1 UFC) apparently has his own brand of hot sauce, which shouldn’t come as a surprise since ‘The Diamond’ hails from the same hometown as former double champ, Daniel ‘DC’ Cormier. That hometown would be Lafayette, LA.

“You’ve got the hot sauce Dustin,” McGregor said. “I’d love to taste the hot sauce.”

Poirier replied, “I’ve got a bottle for you.”

Then McGregor said, “I’d appreciate that. I’ve got a bottle of Proper (No. 12 whiskey) for you. I’d love to share that. He’s putting in the work. I’ve been highly impressed. I think the whole business has been highly impressed.

“After that loss many years ago, he rose up, became champion. He’s given so much back. I’m honored to share this Octagon with this man. I know we have that competitive fire and it’s still there.

“There’s no denying that we have a clash, and it’s going to be a good, firework filled bout. But the respect is admirable for me.”

Poirier agreed to the hot-sauce-for-whiskey deal to take place on Sunday. Then he added, “I don’t want it to seem like we’re up here giving each other back massages, but I just want to clear the air. Conor’s team, McGregor Sports and Entertainment, did reach out to my foundation and they are starting the donation to the Good Fight Foundation.




“So Conor, man to man, you’re going to help a lot of people with that.”

There were not any such gestures of this nature back in 2014. McGregor was 3-0 in the UFC and looking to jump into the top five of the 145-pound rankings in his first fight with a top-10 foe. McGregor called Poirier “a hillbilly from the back ass of nowhere.” In both face-offs during Fight Week, it was clear that McGregor was under Poirier’s skin, as Poirier approached him with a flurry of profanities in each instance.

The fight lasted only 1:46. Poirier landed 10 strikes compared to McGregor’s nine. However, McGregor cracked Poirier with a vicious left hook that landed behind his ear and dazed him. A follow-up punch downed Poirier and referee Herb Dean waved it off after McGregor landed a couple of hammer fists to Poirier’s face.

After the defeat, Poirier decided to move up to 155 pounds, and the man has been on an absolute tear since then. He started his run at lightweight with four consecutive victories, including three first-round finishes against Carlos Diego Ferriera, Yancy Medeiros and Bobby ‘King’ Green.

In a fight-night main event on Sept. 17 of 2016, Poirier suffered a slight hiccup when he was KO’d in the opening frame by Michael ‘The Menace’ Johnson. However, he bounced back with a majority-decision win over Jim Miller (who is ranked No. 1 in UFC history in Octagon appearances with 36, No.3 in career UFC wins with 21, No. 4 in career UFC finishes with 13, No. 3 in career UFC submissions with 10 and No. 1 in career UFC lightweight victories with 19) at UFC 208.

Next, Poirier was matched up against former UFC lightweight champion Eddie Alvarez, who was coming off losing his belt to McGregor in a second-round KO defeat. Poirier was getting the better of the scrap when late in Round 2 Alvarez landed a vicious (and illegal) knee to Poirier’s head.

After giving Poirier a minute or two to recover, the referee asked him if he could continue and Poirier responded, “I still can’t see straight,” prompting the ref to rule the bout a no-contest.

Poirier then won three consecutive fights in spectacular fashion. First, he submitted former lightweight king Anthony ‘Showtime’ Pettis via third-round body triangle in the show’s Fight of the Night. Then in April of 2018 in a five-round main event, Poirier and Justin ‘The Highlight’ Gaethje waged a war that was dubbed Fight of the Year by MMAJunkie, MMAWeekly and MMAFighting.

Gaethje appeared to take the momentum away late in the third when it seemed as if Poirier was starting to gas. But in the first 33 seconds of Round 4, Poirier hurt, dropped and finished Gaethje with a flurry of powerful punches. Fourteen weeks later, Alvarez and Poirier ran it back in a five-round headliner at UFC Calgary.

This time when Poirier hurt Alvarez, he polished him off via TKO with 55 seconds left in the second stanza to earn a Performance of the Night bonus. With lightweight champion Khabib Nurmagomedov suspended for the post-fight brawl after he defeated McGregor, Dana White set up a fight to determine the interim 155-pound champ in Atlanta at UFC 236 on April 13 of 2019.

Poirier was matched up against then-featherweight champion, Max ‘Blessed’ Holloway, who was making his lightweight debut. From the start, it was clear that Poirier had more power and he consistently got the best of the boxing exchanges for 25 minutes. Poirier won a unanimous decision (49-46 across) to capture UFC gold and set up a unification bout with Nurmagomedov at UFC 242 on Sept. 7 of 2019 in Abu Dhabi.

The fight lasted 12 minutes and six seconds. Other than Poirier landing several nice punches in the few moments the fight remained standing early in the second and third rounds, it was all Nurmagomedov, who landed an early takedown in Round 1 and dominated from the top position for the rest of the stanza. It was much of the same in the final four minutes of the second frame.

When Nurmagomedov got Poirier down early in the third, Poirier was able to attempt a guillotine-choke submission. However, both fighters were wet and sweaty at this point, making the submission more difficult to execute. After calmly fighting off the choke for about 20-25 seconds, Nurmagomedov wiggled out and promptly moved into top position. It wasn’t long afterward that he forced Poirier to tap with a rear-naked choke.

For the first time in his career, Poirier was sidelined for an extended stretch and underwent shoulder surgery. Ten months later, he returned to the UFC APEX Facility this past summer to take on Dan ‘The Hangman’ Hooker in a five-round headliner.

In a bloody battle that garnered FOTN honors, Poirier won a UD (48-47, 48-46, 48-47) by dominating the fourth and fifth rounds. Both men had plenty of big moments in the first three rounds, which played out like a firefight in a phone booth. Every time Poirier seemingly had Hooker hurt badly, the New Zealander would dig deep and rally back. A big knee out of the clinch briefly staggered Poirier in Round 2, but he fought his way out of it.

I was holding a Poirier to win inside-the-distance ticket and thought I was on the verge of winning 4-5 different times in the fourth and fifth rounds. However, Hooker refused to tap on a deep choke and a sick armbar, and the referee never intervened when Poirier was dealing out ground-and-pound punishment from mount late in the fifth.

Poirier is now 10-2 with one no-contest since moving up to 155 pounds. Over that 13-fight stretch, he owns wins over four former UFC champions in Holloway, Alvarez, Pettis and Gaethje. He’s in a third-place tie for KO/TKO wins in the division’s history with six, and Poirier is in a ninth-place tie for most fight-night bonuses as a lightweight with eight.

When Poirier was a featherweight, he captured notable wins over the likes of Holloway (in Max’s Octagon debut), Jonathan Brookins, Erik Koch and Diego Brandao.

Poirier has earned seven career FOTN bonuses and 11 career bonuses to rank seventh in UFC history. His scrap with Gaethje was 2018 FOTY, and Poirier’s fourth-round submission loss to The Korean Zombie was the 2012 Fight of the Year.

McGregor’s meteoric rise to international stardom continued at warp speed after his win over Poirier at UFC 178. Next, the Dublin native defeated Dennis Siver via second-round TKO in the UFC Boston main event. That victory earned him a title shot vs. then-featherweight kingpin Jose Aldo.

After a world tour over 12 days that included promotional stops in eight cities across five countries, McGregor appeared to be dominating the mental warfare between himself and the Brazilian. Then 18 days before the fight, it was reported that Aldo had sustained a fractured rib in training.

He eventually pulled out of the bout, setting up a short-notice fight with Chad Mendes for the interim featherweight strap. Mendes dominated the first nine minutes of the fight. He scored early takedowns in both rounds and then delivered ground-and-pound punishment from the top position.

Mendes drew blood on McGregor with a cut from an elbow on his forehead. It was the first time McGregor had been bloodied in his sixth Octagon appearance. Nevertheless, McGregor continued to talk trash from the bottom position. With less than a minute remaining in the second frame, McGregor was able to get back to his feet.

After taking the bout on short notice and making a difficult weight cut, Mendes was starting to tire. McGregor took advantage and started peppering his opponent with strikes. He floored Mendes with a left hand and ‘Money’ covered up, prompting the referee to intervene with three seconds remaining in Round 2.

The TKO victory set up the match with Aldo at UFC 194 to unify the belts. McGregor needed only one punch, a counter left, to put Aldo to sleep in merely 13 seconds. ‘The Notorious’ instantly took aim at lightweight champion, Rafael dos Anjos, who was happy to grant McGregor a title shot at UFC 196 in March of 2016.

Dos Anjos pulled out of the fight, though, two weeks beforehand due to a broken foot. In its rush to find a replacement, the UFC found an opponent who made for an even bigger fight in Nate Diaz, who had just returned from partying on a vacation in Mexico. Diaz agreed to the fight, but asked for it to take place at 165 pounds due to the short notice.

McGregor countered that the weight was not relevant, insisting they do battle at 170 pounds. In what was the opposite of the Mendes scrap, McGregor dominated the first 7-8 minutes vs. Diaz, who was a bloody mess from absorbing so many strikes.

But a combination from Diaz completely shifted the course of the fight. The left hand from Diaz buckled McGregor, who was hurt and starting to gas. After Diaz got the better of a few more striking exchanges, McGregor desperately attempted a takedown that was easily stuffed.

Once on the ground, it was all Nate. He took the mount position and started dropping bombs on McGregor, who gave up his back. Then Diaz flattened him out and forced a quick tap with a rear-naked choke.

Diaz instantly became a millionaire and was all about making more cash ASAP. He granted an immediate rematch with McGregor at UFC 202, and the Dubliner insisted the bout be contested at welterweight again.

In a back-and-forth thriller that Diaz appeared to be on the verge of finishing late in both the second and third rounds, McGregor captured a majority decision (48-47, 47-47, 48-47) victory. Diaz clearly won the third and fifth rounds, while McGregor won the first and fourth rounds. The decision came down to the second stanza.

McGregor was dominating the second frame for the first three minutes before getting stung by Diaz and, similar to the first fight, starting to tire a bit. Diaz poured it on in the final minute of the second, hammering McGregor with punches, knees and elbows against the fence. McGregor was fortunate to survive the round, yet all three judges gave him the nod in the stanza.

After exacting revenge on Nate, McGregor won the lightweight strap with a second-round KO win over Alvarez at UFC 205 at Madison Square Garden in New York City. However, he never defended his belt at featherweight or lightweight. Instead, he opted for an eight-figure payday in a boxing match with unbeaten Floyd ‘Money’ Mayweather, who won by 10th-round TKO.

McGregor went 23 months without an Octagon appearance. McGregor spent 2017 and 2018 partying and enjoying the fame and money earned by his accomplishments.

To say he lost his way would be an understatement. He was arrested multiple times, accused of sexual assault in both Ireland and America and was caught on video sucker punching an old man who had turned down a shot of whiskey from him. There was an incident at a Bellator show where he acted like a maniac and the big one in Brooklyn.

Twenty-four hours after Nurmagomedov and his team cornered McGregor’s teammate, Artem Lebov, at an NYC hotel in a mini-altercation that ended with Nurmagomedov slapping Lebov, McGregor and a large ground arrived in Gotham via private plane that McGregor instantly chartered from Ireland after seeing the Nurmagomedov-Lebov fray on camera.

As the UFC 223 fighters were leaving Barclays Arena on a bus in the bowels of the facility, McGregor and his group surrounded the bus, throwing items at the windows, one of which broke the glass and caused cuts that forced three of the show’s fights to be cancelled. McGregor was arrested, booked and spent a night in jail in NYC.

Therefore, bad blood was in the air when McGregor returned to the Octagon to face Nurmagomedov, who had won the lightweight strap at UFC 223 by defeating Al Iaquinta. McGregor spent the week partying and talking trash.

Although he displayed terrific takedown defense in the opening round, Nurmagomedov took it to him on the ground in the second stanza. McGregor kept the bout standing and many observers scored Round 3 his way. But in the fourth, Nurmagomedov got McGregor down and forced him to tap with a neck crank.

McGregor finally started to slow his roll late in 2019. After several years of making an ass of himself and losing all focus and passion for the fight game, he went back to work. He planned a “three-fight season” for 2020 starting with a welterweight clash against Donald ‘Cowboy’ Cerrone at UFC 246 on Jan. 18 of 2020.

McGregor added muscle and looked like a strong welterweight. He made quick work of Cerrone in merely 40 seconds thanks to a headkick and follow-up strikes. However, the global pandemic and some bickering with Dana White kept McGregor sidelined for the rest of 2020.

That hibernation is poised to end Saturday night on ‘Fight Island.’ McGregor appears to be in outstanding condition both physically, mentally and emotionally.

In short, it looks as if ‘The Old Conor’ is back.




UFC 257 Predictions
McGregor vs. Poirier

McGregor vs. Poirier - Betting Strategy

I’ve made a lot of money backing Dustin during his brilliant lightweight run.

The Louisiana native has 10 wins since he lost to McGregor, who is 1-1 in just two fights at 155 pounds.

Make no mistake, Poirier can win this fight. He has brilliant stand-up skills and can hurt opponents with powerful kicks and dynamite power in his left hand. If he’s smart, Dustin will try to get McGregor in the clinch and do some grappling in the early going. If McGregor can’t finish Poirier in the first 7-8 minutes of the fight, it’ll be advantage Dustin the rest of the way.

Unfortunately for him, it appears as if he’s catching McGregor (again) at a time when he’s as focused as he was on his way to stardom. Therefore, I’m going to go with McGregor. I’m not sure that this prop bet I’m about to mention is available at many spots, so I’ll leave it off of my “official plays” (that are in bold to follow). But if you can find this prop, I think it’s the best bet on the board – McGregor to win either Round 1 or Round 2 at -120 price.

Let’s put one unit on the McGregor prop to win in Round 1 for a +200 payout.

Also, I want two units on the adjusted total of ‘under’ 1.5 rounds for a +110 return.

Finally, let’s include McGregor (-300) in a three-fight parlay with Amanda Ribas (-310 to defeat Marina Rodriguez) and Hooker (-130 vs. Michael Chandler). I like this parlay for one unit that pays out a +212 return.

Welterweight Bout
Dan Hooker vs. Michael Chandler

In the co-main event, sixth-ranked Dan ‘The Hangman’ Hooker will welcome former three-time Bellator lightweight kingpin Michael Chandler to the UFC. As of Friday morning, most books had Hooker (MMA, UFC) installed as the ‘chalk’ in the 130 to -135 range. Chandler was around +110 on the comeback, while the total was 2.5 rounds flat (-115 either way).

Before losing to Poirier, the 30-year-old Hooker (20-9 MMA, 10-5 UFC) had won seven of his eight previous fights. In that stretch, he registered five finishes with four knockouts and one submission. His victims included the likes of Gilbert Burns, who is about to face Kamaru Usman for the welterweight title, in addition to Jim Miller, Ross Pearson, James Vick, Iaquinta and Paul Felder.

Hooker has 10 career wins by KO, seven via submissions and three by decision. He’s only been finished three times, once by KO (Edson Barboza) and twice by submission (Hoatian Wu and Sonny Brown).

Chandler (21-5 MMA, 0-0 UFC) is making his Octagon debut, but it won’t be his first UFC payday. He was paid to make weight and serve as the backup for the Nurmagomedov-Gaethje fight back in October.

Chandler has won back-to-back fights since losing his Bellator belt to Patricio Freire by first-round KO at Bellator 221 on May 11 of 2019. He’s off a first-round KO win over Benson Henderson, the former UFC lightweight champion. It was his second career win over Henderson, and he’s split a pair of meetings against another former UFC 155-pound champ, Alvarez.

Chandler had twice beaten Freire before losing to him 19 months ago.

UFC 257 Predictions
Hooker vs. Chandler

Chandler has obviously been in big fights before, but there’s nothing like that UFC debut.

We’ve seen the likes of Pettis lose to Clay Guida in his Octagon debut. Will Brooks, a former Bellator champ who has a 2-0 record against Chandler, came to the UFC with much fanfare, only to get cut after going 1-3 in four scraps. Hooker proved he’s a top-five lightweight in his gutty loss to Poirier. Give me two units on Hooker at the -130 price.

There’s not much else on the card calling my name. I’m a huge fan of Ribas, the 27-year-old Brazilian that's 4-0 in the UFC. She’s too expensive, however, on the straight price, so I’ve only included her in the aforementioned parlay.

Therefore, my only other play is going to be on Khalil Rountree for one unit to win in Round 1 (even-money +100 payout) vs. Marcin Prachnio, who is 0-3 in the UFC with three first-round losses.

Rountree has three first-round KO wins in his last seven fights.

UFC 257 Fight Card Odds

Listed below are the odds for the remaining nine bouts for the UFC 257 card.

You can follow the updates in our UFC Betting Odds.

Main Card (10:00 p.m. ET)

Women's Flyweight
Jessica Eye (+100) vs. Joanne Calderwood (-120)

Women's Strawweight
Marina Rodriguez (+260) vs. Amanda Ribas (-310)

Middleweight
Andrew Sanchez (+125) vs. Makhmud Muradov (-145)

Prelims Card (8:00 p.m. ET)

Catchweight (157 lb)
Matt Frevola (+500) vs. Arman Tsarukyan (-700)

Middleweight
Brad Tavares (-120) vs. Antônio Carlos Júnior (+100)

Women's Bantamweight
Julianna Peña (-105) vs. Sara McMann (-115)

Light Heavyweight
Khalil Rountree Jr. (-330) vs. Marcin Prachnio (+270)

Early Prelims (6:40 p.m. ET)

Catchweight (150 lb) Bout
Movsar Evloev (-600) vs. Nik Lentz (+450)

Flyweight
Amir Albazi (-105) vs. Zhalgas Zhumagulov (-115)

The 2010s featured the Chicago Cubs winning the World Series, the greatest comeback in Super Bowl history, 5,000-1 longshot Leicester City winning the Premier League and Tiger Woods returning from a career meltdown to capture the Masters.

The decade also saw the American sports betting landscape change forever.

On May 14, 2018, the United States Supreme Court struck down a federal statute that had restricted regulated sports betting to primarily Nevada for more than a quarter of a century. The landmark ruling sent dozens of states scrambling to get into the bookmaking business, and 20 states have currently authorized sports betting. It was a game-changer.

However, our most notable betting event of the decade didn't take place on the field or in the courtroom. It happened in 2017 inside the ring in Las Vegas between Floyd Mayweather and Conor McGregor, and it was a spectacle initially considered little more than a publicity stunt. It turned out to be the most heavily bet fight ever and an opportunity of a lifetime for professional gamblers.

Here is our look back at Mayweather-McGregor.

The hype

By the time the opening bell rang, late on that Saturday night in August at MGM Grand Garden in Las Vegas, more than $1 billion had likely been staked around the globe on a fight between a retired, undefeated boxing champion and a mixed martial arts star who had never boxed professionally.

In the final five hours leading up to the fight, nearly £12 million ($16.1 million) was traded on Mayweather-McGregor at Betfair, a prominent sports betting exchange in the United Kingdom. In total, a record £59 million ($79 million) was riding on the fight at Betfair, more than any other event in the company's history, including World Cup finals.

'It was so unique that we doubt we'll ever see anything similar betting-wise in a long time,' Katie Baylis, spokesperson for Betfair, told ESPN in December.

In Nevada, the bulk of the small money backed the underdog McGregor. The day of the fight, bookmaking company William Hill U.S. said for every one bet placed on Mayweather, 19 came in on McGregor. The fight ended up attracting more than twice as much money and 50% more individual bets than Mayweather's 2015 bout with Manny Pacquiao, previously Nevada's most heavily bet fight. Mayweather-McGregor was the biggest decision in William Hill's history in the U.S.

Mayweather Vs Pacquiao Odds

Nevada Gaming Control officials estimated $65 million was bet on Mayweather-McGregor at the state's sportsbooks, including at least six $1 million wagers -- five more than reported for Super Bowl LI between the New England Patriots and Atlanta Falcons earlier in the year.

The hype

Rumors that the 40-year-old Mayweather (49-0) would come out of retirement to take on McGregor, a 29-year-old UFC champion, began surfacing more than six months in advance of the fight. It seemed outlandish and more of a cash grab for two polarizing personalities than an actual fight.

'Honestly, the first thing that came to mind was Thunderlips, Rocky against Hulk Hogan [in the movie 'Rocky III'],' said Jay Rood, who at the time was the director of race and sports for MGM in Nevada.

Setting the odds, bookmakers said, was more about estimating the betting interest than gauging the fighters' skill sets. After all, they didn't have a lot to go on with McGregor's lack of boxing experience.

'You make a number based on what type of money and flow of money that you would expect at the counters,' Jay Kornegay, vice president of race and sports at the Westgate in Las Vegas, said that summer. 'It's not necessarily the true odds; it's just reflective of the betting patterns that we expect to see.'

Some oddsmakers put Mayweather's true odds at -5,000 but knew there would be plenty of money on McGregor. The first prices appeared at Las Vegas sportsbooks in February, four months before the fight became official. Mayweather opened as a whopping -2,500 favorite (1-25), with McGregor a hefty 11-1 underdog.

While the books anticipated early money on McGregor, they far underestimated what was coming their way.

Forty of the first 42 bets on the fight at the SuperBook at Westgate Las Vegas were on McGregor. Most, but not all, bets on McGregor were small. However, MGM's sportsbook took two $100,000 wagers on the Irishman, and other books reported taking several five-figure bets on the underdog. The liability on McGregor (who was fetching 5-1 or greater odds) mounted quickly and reached unprecedented levels for a fight.

'The backing of an entire sport, UFC and MMA, was really surprising,' said Rood, now chief risk officer at sports betting company Bet.Works. 'Their fans showed up with their dollars, backing their belief that their guy was a superior fighter. The price was shocking, that it moved down so much and we took on so much liability.'

Two months before the fight, MGM's liability on McGregor reached 'significant seven figures.'

'You never saw that,' Rood said.

By June, when the fight became official, Mayweather's odds had dropped to -1,100 and McGregor 7-1. The price would continue to shrink. Professional bettors were salivating.

'[Floyd] is 49-0 for a reason, a perfect return on investment,' Rood said at the time. 'So I don't want to give too much away on that side and end up needing McGregor for a big amount. If you go back at Floyd's average price the last 10 years, it's got to be north of six dollars [-600], and that's against the top competition in boxing. So now you're going to give him a subaverage price for a guy that's never really boxed in his life. I'm not willing to put Floyd Mayweather on a blue-light special. We're at -750, and I think that's a blue-light special.'

Apparently, Mayweather thought so, too.

Mayweather attempts to bet on himself

At approximately 3:30 p.m. PT -- a few hours before the fight -- Mayweather stopped in at the sportsbook at The M Resort in Henderson, Nevada, where he was a regular customer. However, he had never made a bet like the one he was trying to place the day of the fight.

Mayweather asked to bet $400,000 on his fight against McGregor ending under 9.5 rounds. The bookmakers were concerned over the legality of a fighter betting on anything other a straight win and told Mayweather to hold on, before they ultimately declined to take the bet.

'He was pissed,' a source told ESPN the night of the fight.

In 2017, neither the Nevada State Athletic Commission nor Nevada Gaming Control had specific regulations addressing a fighter's ability to bet on himself. Gaming Control has since tweaked a regulation that puts the onus on the state's sportsbooks to take 'reasonable steps' to prevent anyone directly involved in an event from betting on that event.

'A book always has the option to say no, if they're unsure or not comfortable,' said A.G. Burnett, chairman of Nevada Gaming Control Board at the time and now a partner at the law firm McDonald Carano. 'Regardless of the amount of money wagered or the pressure a patron may place on a book or the amount of P.R., I don't think someone will fault the book for not taking the bet.'

After the fight, Mayweather told ESPN that he gave a friend $400,000 to bet on under 9.5 rounds, but he said he was only able to get down $87,000.

Mayweather stopped McGregor 1 minute, 5 seconds into the 10th round. He would've won his attempted bet.

'The greatest bet ever'

Since Mayweather had always been a convincing favorite throughout his career -- -200 against Pacquiao, -300 versus Canelo Alvarez, -400 against Shane Mosely -- professional bettors couldn't believe they could get a similar price on Mayweather versus McGregor.

Mayweather's odds dipped under -400 in the days leading up the fight, and the big, smart money began appearing.

'I over-bet that fight,' said Bill Krackomberger, a well-known professional sports bettor, who ended up getting more than $25,000 down on Mayweather. 'I actually started doubting myself when the line started dropping, not even thinking that it's all these millennials, and all these kids who watch UFC. Their little $50, $100, $200 and $500 bets cumulatively added up to millions of dollars and forced the sportsbooks to over-move the lines to get the buyback from the sharps. I'm not sure there will ever be another betting opportunity like that again.'

Shane Sigsbee of sports betting syndicate Imawhale Sports lives in the same Las Vegas neighborhood as Mayweather and has gotten to know the boxer in recent years. A few weeks prior to the McGregor fight, Mayweather asked Sigsbee if he was planning to bet on him. Sigsbee said of course and told Mayweather he was going to place the biggest bet of his life on him.

Mcgregor Vs Mayweather Ufc Odds Today

Mayweather, an avid sports bettor, often discussed betting strategies with Sigsbee but never got into specific dollar amounts. Sigsbee bet $50,000 to win $10,000 on Mayweather. His company has had more at risk on a game before, but this was the largest wager Sigsbee had ever made personally.

After the fight, Sigsbee got an invitation via text message to go over to Mayweather's house. With his betting slip in hand, Sigsbee jumped into his golf cart and drove a few streets over to Mayweather's place.

'Floyd came over to me and said, 'My man, my man, how much money did I make you tonight?' Sigsbee recalled. 'I said, 'Floyd, thank you so much' and showed him the ticket.'

Mayweather couldn't believe it.

'The level of disappointment on his face was like [nothing] I'd ever seen,' Sigsbee said with a chuckle. 'He was disgusted that was how little I bet on the fight.'

Despite Mayweather's disappointment, Sigsbee and other professional gamblers enjoyed one of the best betting opportunities they'd ever experienced. Bookmakers were so inundated with money on McGregor that they gladly accepted money on Mayweather, anything to help reduce their liability.

Vegas Odds On Mayweather Vs Mcgregor

'It didn't matter,' said Jason Simbal, who at the time of the fight was vice president of risk for Las Vegas sportsbook operator CG Technology. 'There was not enough sharp money to bet Mayweather to hedge people's decisions. They had bet all their money already.'

The fight started off with McGregor landing a couple clean shots and surprisingly staying very much in the fight through five rounds. Some bookmakers were sweating. The savvy Mayweather wore McGregor down late, though, and finished him off early in the 10th round when referee Robert Byrd stopped the fight, ending a remarkable betting event.

Online Betting Mayweather Vs Mcgregor

With two of the biggest fighters in their respective sports, six-figure bets on both sides and unprecedented line movement, it truly was an event we may never see again.

Mcgregor Vs Mayweather Ufc Odds Predictions

'It was a really unique opportunity,' Sigsbee said. 'Everyone thought it was the greatest bet ever.'