Floyd Mayweather's budding MMA career is starting to get some support ... because now a combat sports expert is telling the world not to bet against Floyd being a force in the UFC one day.
We talked to Showtime boxing host Jim Gray on a rainy night in L.A., and when we brought up the idea of Floyd's 8-month transition into the Octagon ... Jim cautioned against writing Money off.
"Don't ever bet against Floyd Mayweather in anything, he's 50-0."
We get you Jim, but when you say ANYTHING, we're wondering WHERE IT STOPS?