The retired boxer doesn't give many details on the bet other than he bet on Isaiah Thomas.

Mayweather either placed a bet on Isaiah dropping 50+, which he did, or maybe the bet was on a Celtics W.

Either way he racked up some serious dough.

I bet on @isaiahthomas today! ☘️ #TMT

A post shared by Floyd Mayweather (@floydmayweather) on May 2, 2017 at 10:17pm PDT