You knew Wiz Khalifa could scrap in MMA ... but did you know he could box too???
It's true ... at least, now it is -- after the rapper got a private, 1-on-1 fighting lesson from Evander Holyfield!!!
The Real Deal and Wiz hit up Jay Glazer's Unbreakable Performance Center in L.A. recently ... and the "Black and Yellow" spitter got in a dope training sesh with the champ.
Evander gave him some pointers on his defense ... Wiz explained how he's gotten some weight on his skinny frame -- and Glazer was there to document it all.