If Antonio Brown ain't performing on the field, he's damn sure doin' it on stage -- 'cause the NFL star just put on a dope show at the Summer Smash festival in Chicago.
And, he even jumped into a pit of fans for some crowd surfin'!!
Brown -- rap name AB -- hit the stage this weekend in Chi-town for the hip hop festival that featured some of the big names in rap like Quavo, Lil Yachty, and Playboi Carti.