IMAGN IMAGES via Reuters Connect
Betting companies made a ton of money on people betting on Conor McGregor.
On Saturday, McGregor made his long-awaited return to the Octagon to face off against Max Holloway.
Going into the fight, McGregor was a +275 underdog to Holloway.
Despite not having fought in five years, McGregor was the betting favorite to win the fight.
According to ESPN Bet, 92 percent of the money bet on McGregor-Holloway was placed on McGregor.
Everyone was betting on Conor McGregor 😬 pic.twitter.com/yGYMLJKNFn
— ESPN BET (@ESPNBET) July 12, 2026
Unfortunately, McGregor went down with a bizarre leg injury in round one of the fight.
ALL ANGLES In depth look at how Conor McGregor injured his leg 👀 #UFC329 pic.twitter.com/x5Xc6FMGer
— Mcgregor Forever (@mcgregorufc22) July 12, 2026
BETMGM claims the McGregor/Holloway fight was the most bet om MMA event in BETMGM history.
The Conor McGregor-Max Holloway fight at UFC 329 was the most bet MMA event in @BetMGM history.
➡️ McGregor to win by KO/TKO or DQ (+275) was the most bet prop
— Ben Fawkes (@BFawkes22) July 12, 2026
After the fight, McGregor claims he did not enter the fight with a pre-existing injury.
My head gasket is gone. Destroyed. I had no injury / injuries going into the fight. I was throwing kicks, planted and jumping, all throughout camp as well as backstage before the fight. This came out of nowhere. I am beyond dark here. I can only describe it as hell.
The UFC also released footage of McGregor throwing kicks backstage before the fight, implying that he wasn’t hurt before going into the cage.
The UFC has released footage of Conor McGregor’s warm up before his fight with Max Holloway showing no signs of obvious injury.
He even appears to be practicing the same kick he used when he injured his knee during the fight. pic.twitter.com/g6hzwVc6A8
— ITM Network (@InTheMixNet) July 12, 2026