In August 2002, just before the start of the 2002–03 season, Adams retired from professional football after a career spanning almost 20 years, his last match being the last league game of the season at home to Everton (the 2002 FA Cup Final was unusually played "before" the last league fixtures). He played 674 matches for Arsenal (only David O'Leary has played more) and was the most successful captain in the club's history. The number 6 shirt that Adams wore when playing was not used again until the 2006–07 season, when it was assigned to Philippe Senderos. It is currently assigned to Gabriel, as of 2020.