The proud joint-owner of the Premier League's worst disciplinary record (alongside Patrick Vieira and Richard Dunne), Ferguson's nine red cards stemmed from a combative style of play, and a consistent inability to keep his temper in check. He served three months in jail for a head butt on Raith Rovers player John McStay while playing for Rangers, and showed similarly violent tendencies in the Premier League. He also once attacked a fan on crutches in a taxi-rank brawl.
