Odell Beckham Jr. needs to get the hell outta Cleveland ... so says Robert Griffin III, who's calling for the Browns to trade the star receiver and stop wasting his talent.
It's no secret -- OBJ isn't nearly as productive in The Land as he was with the New York Giants ... and while he's battled injuries in his 3 seasons with the Browns, he's not getting many targets when he's healthy.
RG3 -- who spent the 2016 season with the Orange and Brown -- has seen enough of OBJ in CLE .