Source: Floyd attempted $400K bet on self

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.
Read more: http://www.espn.com/chalk/story/_/id/20472005/floyd-mayweather-tried-bet-fight-conor-mcgregor?source=Snapzu