16. Rajan Rondo
Rondo brought toxic energy to the Dallas Mavericks in 2015. Things reached a head in the postseason when he effectively gave up on the court. The coaches made up an injury because his antics infuriated them so much. He never played for the franchise again.
This wasn’t the only time that the polarizing figure infuriated his teammates. Rondo also rubbed the Lakers the wrong way because he sat away from them during games. It was a bizarre move that alienated him and created bad optics (via SBNation).