Poirier won Saturday night’s massive trilogy fight in Las Vegas via doctor’s stoppage after McGregor suffered a gruesome leg break towards the end of the first round.
As well as taking a 2-1 lead in his bitter rivalry with the Irishman six months on from a stunning second-round stoppage at UFC 257, that latest victory also saw ‘The Diamond’ earn a shot at the lightweight title currently held by Brazil’s Charles Oliveira.
His victory also led to a big wager win for boxing icon Mayweather, who posted a betting slip on his social media channels that showed a $50,000 bet on Poirier to triumph.
‘Money’ won $35,714,30 in total by betting on the Louisiana native at odds of -140.
Mayweather tagged Poirier in his Twitter and Instagram posts, with the message: “Thanks for getting me paid!”
Poirier later replied: “I got you champ!”
There is certainly no love lost between McGregor and Mayweather, with the duo having faced off in a lucrative boxing match back in August 2017.
The undefeated eleven-time, five-division world champion Mayweather surpassed Rocky Marciano by moving to 50-0 in the so-called ‘Money Fight’ that reportedly earned him around $280m, sealing a stoppage in the 10th round.
Mayweather has since come out of retirement for exhibition bouts against Japanese kickboxer Tenshin Nasukawa and YouTuber-turned-boxer Logan Paul, being taken the distance by the latter in Miami last month.