At the start of the outdoor season he had wins in Maringá in Brazil and at the Cezmi Or Memorial. He beat Christophe Lemaitre to win the 100 m at the 2010 European Team Championships, helping Great Britain to second place in the tournament and recording 9.99 seconds – the first sub-10 time by a European athlete in almost four years. Lemaitre and Chambers were seen as the only gold medal contenders for the 100 m final at the European Athletics Championships, but the event defied expectations in terms of times and placings. The Frenchman won in 10.11 seconds into a headwind while a tight finish between the four following athletes (all 10.18) saw Chambers finish fifth.