Amongst his British contemporaries Chambers ranks top with two 9.97 s finishes; the first in 1999 in Seville, Spain and the second in 2001 in Edmonton, Canada. Compatriot Mark Lewis Francis also scored a personal best of 9.97 s at the Edmonton World Championships. Great Britain teammate Jason Gardener's personal best of 9.98 s falls just short of Chambers'. None of his British contemporaries have broken the ten second barrier on more than one occasion; Chambers has done so five times.