1978: Born Islington, London, April 5.
1994: English Schools intermediates champion at 100m.
1995: Gold in 100m and sprint relay at European Juniors.
1997: Gold in 100m and sprint relay at European Juniors. Won 100m in 10.06, then a world junior record, the first by a British sprinter since Peter Radford in 1958.
1998: Took silver in Europeans and was third in World Cup.
1999: Second to Bruny Surin in Nuremberg in 9.99 seconds, thus becoming the second European sprinter to break the 10-second barrier after Linford Christie.
Ran 9.97 to claim bronze at the World Championships.
2000: Fourth in Olympics final in Sydney.
2002: Bid for 100m gold at the Commonwealth Games starts well with wins in preliminary rounds, but he gets off to a bad start in the final and pulled up with cramps, later attributed to lack of fluids.
Takes the gold medal in a championship best of 9.96 at the Europeans and adds a superb run to bring the British team home for gold in the 4x100m relay.
Reduces his 100m best to 9.94 in Zurich.
With a tailwind on the legal limit of 2.0 m/s, ties Linford Christie's European record of 9.87.
2003: August 25 - Finishes fourth in the World Championships 100m final in Paris in a time of 10.08.
October 22 - Revealed to have tested positive for newly discovered 'designer steroid' tetrahydrogestrinone (THG). Denies knowingly taking the drug.
November 7 - IAAF suspend Chambers pending disciplinary hearing, after B sample tests positive.
2004: February 12 - Chambers' coach Remi Korchemny among four men indicted by a federal grand jury in America on charges of distributing illegal steroids.
February 22 - Handed a two-year worldwide ban due to expire on November 7, 2005 and lifetime suspension from the Olympics action.
2005: November 7 - Ban expires but Chambers has to comply with World Anti-Doping Agency (WADA) regulations preventing him from returning to competition until he has undertaken three mandatory tests.
December 10 - Admits using THG for 18 months before failing his drug test including when he became double European champion in August 2002.
2006: June 9 - IAAF accept offer from Chambers to reimburse them with the appearance fees and prize money he won during the period he was using THG.
June 10 - Cleared by UK Athletics to make comeback.
June 11 - Returns to action at Gateshead, finishing third in 10.07 as Asafa Powell equalled his own world record of 9.77. His time is the fastest by a European in 2006.
June 26 - All performances since January 1, 2002 annulled including individual and relay gold at the European Championships in Munich in 2002 and the European record of 9.87 he shared with Linford Christie after his admission to using THG prior to his failed drugs test.
August - Selected to represent Great Britain at the European Championships in Gothenburg.
Finishes seventh in the individual event before joining Mark Lewis-Francis, Darren Campbell and Marlon Devonish in the 4x100m sprint relay squad. The quartet won gold but their achievement was overshadowed by Campbell's refusal to celebrate on a lap of honour with his team-mates, saying it would be "hypocritical".
2007: March - Secured a contract with NFL Europa side Hamburg Sea Devils after completing a national training camp in Tampa, Florida.
2008: January - UK Athletics chief executive officer Niels de Vos claims Chambers will be barred from making a comeback because he has not undergone drug testing since November 2006 when he left the sport. The IAAF claim he is eligible to run because he never retired from athletics.
February 2 - Qualifies for the World Indoor Trials in Sheffield by winning the 60m at the Birmingham Games in 6.60.
February 5 - Chambers allowed to compete in Sheffield after UKA grudgingly accept his entry after the athlete's solicitors prepared to launch a High Court injunction against them.
February 10 - Storms to victory in the 60 metres in Sheffield to book himself a spot in next month's World Indoor Championships in Valencia.
March 7 - Wins a silver medal in the World Indoor Championships.
March 28 - Chambers to visit engage Super League club Castleford for talks about a possible career in rugby league, according to his spokesman Damion Silk.
May 6 - After a month-long trial with Castleford, the club reveal he will not be offered a contract.
June 4 - Wins his first 100m race since August 2006 in Greece.
June 28 - Achieves the Olympic 'A' qualifying standard at a meeting in Biberach, Germany.
June 30 - 200 past and present athletes, including Dame Kelly Holmes and Sir Steven Redgrave, sign a petition against Chambers being picked for the Beijing Games after his lawyers confirm plans for a High Court appeal against the BOA's lifetime Olympics ban.
July 3 - Court proceedings are launched by Chambers' legal team.
July 12 - Wins the 100m at the Aviva UK National Championships, the qualifying event for the British Olympic team.
July 18 - Chambers' attempt to gain a temporary injunction against the BOA ban is rejected at the High Court to end hopes of competing in BeijingReuse content