Michael Jordan did not necessarily issue formal bans against specific individual players joining his roster through traditional front-office trades, but he was notoriously uncompromising regarding the mental toughness, work ethic, and competitive commitment of his Chicago Bulls teammates. During the 1990s championship era, Jordan famously berated teammates if they attempted to step in or physically defend him when opponents tried to intimidate him, believing that showing any weakness or accepting outside retaliation would give rival teams psychological leverage. His extreme competitive standards demanded absolute accountability from everyone in the locker room.