Irish bookmaker Paddy Power has found itself in the middle of a social media firestorm after advising punters “to always bet on black” ahead of the historic Floyd “Money” Mayweather vs. Conor McGregor fight this weekend.

The Independent reported that the Dublin-based bookmaker has already settled bets of those who have backed Mayweather to beat the Irishman in the multi-million dollar mega-bout this coming Saturday at the T-Mobile Arena in Las Vegas, Nevada.

Punters who wagered on Mayweather received £250,000 (US$320,175) four days before the biggest commercial night in the history of combat sports.

Paddy Power, however, grabbed the people’s attention with what people described as a racist explanation on why it decided to pay out on Mayweather and against their countryman McGregor and not because of the settlement itself.