1988: Born April 6 in Kinshasa, Zaire (now the Democratic Republic of Congo).
1999: Moves to England at the age of 11, reuniting with his father who had earlier sought political asylum in the country due to civil war in his homeland.
2002: Joins the youth team set-up at Arsenal - the club he supported as a boy in his homeland - before graduating to their Academy two years later.
2005: Signs professional terms at Arsenal and makes the first of two first-team appearances for the club - both in the League Cup - against Sunderland on October 25.
2006: August - Joins Birmingham on a season-long loan and goes on to make 36 appearances on his way to winning the club's young player of the year award.
2007: May 11 - Makes his move to Birmingham permanent after the club agrees a reported £4million fee with Arsenal.
2007: August 21 - After representing England at every age level from Under-16s, Muamba is handed his England Under-21 debut in a friendly against Romania.
2008: June - Scores two goals in 37 league appearances in the 2007/08 season but cannot prevent Birmingham's relegation.
August 7 - Signs for Bolton after the Trotters agree a fee in excess of £5million with Birmingham for the midfielder.
2010: August 10 - Signs a new four-year contract at Bolton, committing him to the club until 2014.
2011: June - Represents England Under-21s at the European Championships in Denmark.
August 13 - Scores his third league goal for Bolton in his side's season-opening 4-0 demolition of QPR.
2012: March 17 - Muamba collapses in the 41st minute of Bolton's FA Cup tie with Tottenham at White Hart Line. He receives emergency treatment on the pitch and the match is subsequently abandoned. Bolton later confirm that Muamba is "critically ill" in intensive care at the London Chest Hospital.
March 19 - A Barts and the London NHS Trust statement confirms Muamba is showing signs of improvement and his heart is beating without the aid of medication. Bolton later announce Muamba has been able to recognise family members and respond to questions.
March 30 - Further signs of Muamba's improvement come when he is pictured for the first time since collapsing. In a message posted on Twitter by his girlfriend Shauna, Muamba is shown sitting up in his hospital bed and smiling.
April 16 - Muamba is discharged from the London Chest Hospital.
May 2 - Returns to the Reebok Stadium for the first time since his cardiac arrest. Enters the field to a standing ovation as he is introduced ahead of Wanderers' Premier League game against Tottenham and is overcome with emotion as he acknowledges the applause from all sides of the ground.
August 15 - Announces his retirement from football on medical advice.