Domestic Championships Record
1997 – AAA Championships 200m gold
1998 – AAA Championships 100m bronze
1999 – AAA Championships 200m silver
2000 – AAA Championships 200m bronze
2001 – AAA Championships 200m gold
2002 – Commonwealth Games Trials 200m gold, AAA Championships 200m gold
2005 – AAA Championships 100m DQ, 200m silver
2006 – AAA Championships 100m gold, 200m gold
2007 – Norwich Union World Trials 100m gold, 200m gold
2009 – Aviva World Trials 200m silver
2010 – Aviva European Trials 100m bronze, 200m silver
2011 – Aviva World Trials & UK Championships 100m bronze

Major Championships and International Record
2011 – IAAF World Championships 100m 7th sf
2010 – European Championships 200m 4th. Commonwealth Games 200m 5th, 4x100m gold
2009 – World Championships 200m 7th sf (4x100m silver). IAAF World Athletics Final 200m 6th
2008 – Olympic Games 200m 7th sf (DQ 4x100m). European Cup 200m gold, (4x100m gold)<
2007 – World Championships 100m 6th, (4x100m bronze). European Cup 200m gold, (4x100m gold)
2006 – Commonwealth Games 100m 8th, 200m 6th sf, 4x100m DNF, 4x400m 4th. European Championships 200m bronze, (4x100m gold)
2005 – World Championships 100m 6th sf, 200m 7th sf, (4x100m bronze). European Cup 4x100m gold
2003 – World Champonships 4x100m DQ. World Indoor Championships 200m gold
2002 – European Championships 200m bronze, (4x100m DQ). Commonwealth Games 200m silver, (4x100m gold). European Cup 200m gold, World Cup 200m bronze
2000 – Olympic Games 200m 7th qf
1999 – 200m 5th sf, (4x100m 5th sf)
1998 – European Championships 100m 5th. Commonwealth Games 100m 8th, (4x100m gold)
1995 – European Junior Championships 200m gold, 4x100m gold
1994 – World Junior Championships 4x100m gold

The Coventry Godiva athlete has been one of the most consistent British sprinters in the last 15 years, having contributed greatly to numerous medal winning performances in relays over the years, including the third leg of the victorious 4x100m winning team at the 2004 Olympic Games.

Devonish made his senior international debut at the 1996 European Indoor Championships in Stockholm, where he made the semi-finals and he improved over the next season and qualified for the British team for the 1997 World Championships, where he was a member of the bronze medal winning quartet, and this was consolidated with European and Commonwealth relay gold medals in 1998, as well as making the 100m finals at both events.

Devonish made the British team for the World Championships and Olympic Games in 1999 and 2000 respectively, but failed to reach the final of the 200m on both occasions but at the 2001 World Championships in Edmonton, Marlon finished eighth in the 200m final.

Arguably, 2002 was the best season of his career. Having won the European Cup 200m in Annecy, Devonish won the silver medal at the Commonwealth Games in front of his home crowd in Manchester, setting his existing lifetime best of 20.29, which was followed by a bronze at the European Championships.

In the winter of 2003, Devonish won his third consecutive medal at a major championships. Despite not originally intending to participate at the World Indoor Championships in Birmingham, a string of solid performances convinced Marlon to run at the NIA and the Coventry-born Devonish was vindicated in his decision, as he stormed to the gold medal, clocking 20.62, which was just outside his indoor PB.

Devonish dropped down the rankings for the corresponding two seasons, failing to make the individual teams for the World Championships in Paris or the Olympic Games but in Athens, Devonish ran the third leg of the gold medal winning team, where the quartet narrowly held off their American counterparts in a nail biting contest. In the New Years’ honour list, Devonish was awarded an MBE.

After two solid summer campaigns in 2005 and 2006, Devonish had his best year to date over 100m in 2007, where the veteran was consistently one of the best sprinters in the world. Devonish was consistently in the top three throughout the entirety of the European tour and set his lifetime best of 10.06 in Lausanne. At the World Championships, Marlon attained his best ever finish of sixth. 2008 saw him finish in 8th place in the World Athletics Final over 100m and 7th in his semi-final over 200m at the Olympic Games in Beijing. The following year he claimed 6th place over 200m at the World Athletics Final after a 7th place in the semi-final stage of the IAAF World Championships in Berlin after a legal 10.11 over 100m in Florida. In 2010 the 34-year-old finished just outside of the medals in 4th place over 200m at the European Championships in Barcelona and at the Commonwealth Games in Barcelona again over 200m he finished in fifth place and was part of the gold medal winning quartet in the 4x100m relay.

He announced his retirement from athletics in June 2013.