In baseball, each umpire has a considerable amount of discretion, and may eject any player, coach, or manager solely on his own judgment of unsportsmanlike conduct. The ejectable offense may be an excessively heated or offensive argument with an umpire, offensive interference (contact with the catcher on a play at the plate), malicious game play (especially pitchers attempting to intentionally strike batters with the ball or a manager or coach ordering a pitcher to do so), illegally applying a foreign substance to a bat or otherwise tampering with a ball (most infamously, George Brett's Pine Tar Game), using a corked bat, charging the mound, or otherwise fighting. Between players and umpires, there is a common understanding that a certain level of argument is permitted, but players who too vigorously question an umpire's judgment of balls and strikes, argue a balk and/or use foul language may risk an ejection. A player is also automatically ejected when a bat, glove, cap or helmet is taken off and thrown down in anger and/or confusion.