ud83dudea8ud83dudea8 MAJOR BEEF ALERT ud83dudea8ud83dudea8
A.J. McKee and Patricio Pitbull -- Bellator Featherweight Grand Prix finalists -- do NOT like each other, and it all goes back to ... an autograph?!
"I actually asked [Pitbull] to sign a newspaper," A.J. tells TMZ Sports.
But, instead of just signing the paper ... Pitbull had other ideas, and McKee is PISSED.
"He done crossed my whole face out, picture out. So, I'm f****** him up for that like. Like I lost a lot of respect for him because of that."
And, McKee says he thinks Pitbull's shook.