1994: Joins Wolves, managed by former England manager Graham Taylor, despite interest from top-flight clubs.
1997: Signs professional contract for Wolves in July.
1998: Makes international debut for the Republic of Ireland as a substitute against Czech Republic.
1999: August - Joins Coventry for £6million to become the most expensive teenager in the Premier League and scores twice on his debut as Derby are beaten at Highfield Road.
2000: July - Joins Inter Milan for £13million on five-year deal.
December - Leeds secure Keane on loan until the end of the season, with a view to a permanent £12million switch in the summer.
2001: May - Completes permanent move to Leeds.
2002: July 2 - Leeds agree a fee with Sunderland for the player but he decides against the move.
August - Joins Tottenham for £7million.
2004: October 13 - Becomes Republic's all-time record goalscorer with first-half double in 2-0 win over Faroe Islands in World Cup qualifier at Lansdowne Road, surpassing Niall Quinn's total of 21 and moving onto 23.
2007: May - Signs new five-year contract with Spurs.
December - Becomes only the 13th player ever to score 100 Premier League goals.
2008: February - Wins the League Cup with Tottenham with a 2-1 triumph after extra time against Chelsea at Wembley.
July 28 - Joins Liverpool in a deal worth £20.3million, signing a four-year contract.
October 1 - Scores first goal for Liverpool in 3-1 Champions League win at PSV Eindhoven.
November 8 - Finally nets first Premier League goals for new club with two in 3-0 win against West Brom.
2009: January 25 - Dropped for FA Cup tie against Everton.
February 2 - Signs a four-year deal with Tottenham who pay an initial fee of £12million.
September 5 - Reaches 40 goals for Republic of Ireland with winner against Cyprus.
September 26 - Scores four goals in Tottenham's 5-0 win over Hull in the Premier League.
November 18 - Scores 41st international goal in 1-1 draw against France, in a World Cup play-off. France qualify 2-1 on aggregate, thanks to a controversial goal from William Gallas, after Thierry Henry handballed, which Keane describes as "a bit of a killer".
2010: February 1 - Signs for Celtic on loan until the end of the season.