Today in Baker Mayfield trash talk ... the Cleveland Browns QB is shooting right back at a troll for comparing him to Antonio Brown ... and calling out the controversial NFL superstar in the process.
The troll went to Bake's IG comments on Friday to criticize his post about being a college walk-on and beating the odds to becoming a Heisman winner ... saying the caption was "AB'ish."
"Win football games. That speaks louder than these AB'ish style posts..." the comment said.
If you know Mayfield, you know he ain't taking that lightly .