Not everything went right for undefeated boxing champion Floyd Mayweather on Saturday night.
Multiple sources told ESPN that Mayweather went into the sportsbook at the M Resort in Las Vegas at around 3:30 p.m. PT Saturday with cash and plans to bet on his fight against UFC star Conor McGregor.
Mayweather attempted to place a $400,000 bet on the fight ending under 9.5 rounds at -200 odds, but, according to a source, there were concerns over the legality of a fighter betting on anything other than a straight win, which caused a delay.
Mayweather then tried to bet on himself to win by knockout, but was unhappy about having to wait to place the wager and left without getting the bet down, the sources said.