February: Red-carded for the first time in Manchester City's FA Cup fourth-round tie at Tottenham for two bookable offences.
April: Storms out of Eastlands before kick-off after being axed from team to face Southampton.
July: Criticised by City manager Kevin Keegan for causing mass brawl in a pre-season friendly at Doncaster.
December: Stubs lit cigar in the eye of young team-mate Jamie Tandy during City's Christmas party. Fined six weeks' wages. Tandy later sues Barton, winning £65,000 in damages.
September: Drops his shorts in the direction of Everton fans following City's 1-1 draw at Goodison Park.
December: Shown second red card of his career -- a straight red -- for a two-footed lunge on Abdoulaye Faye in City's 2-0 home defeat to Bolton.
May: Suspended by City after training-ground altercation with Ousmane Dabo, which leaves his team-mate needing hospital treatment. Charged with assault, and on July 1, 2008 receives a four-month suspended jail sentence. Also punished by FA with a 12-match ban -- six matches of which are suspended -- and a £25,000 fine. Moves to Newcastle for £5.8m in June.
December 27: Arrested in Liverpool after a late-night incident and later charged with common assault and affray. Remanded in custody and misses Newcastle's New Year fixtures, being released on January 3.
May 20: Jailed for six months after admitting common assault and affray.
May 3: Sent off against Liverpool for late challenge on Xabi Alonso and is suspended by the club two days later.
November 10: Punches Blackburn's Morten Gamst Pedersen during a 2-1 defeat and banned for three games.
August 1: Newcastle transfer-list Barton after a series of Twitter comments criticising the club. He joins QPR on a free transfer on August 26.
January 2: Scores but is then sent off as QPR lose 2-1 at home to Norwich.
January 26: Unleashes an online tirade against the FA, labelling them an "Orwellian organisation" in need of a "drastic shake-up".
May: In the wake of his dismissal against City, Barton launches an expletive-laden Twitter attack on Alan Shearer before turning on Gary Lineker saying: "back under your stone you odious little toad..."