Dee ihe ga-eso paragraf a - Colman agbaala asọmpi IPC Athletics World Championships ugboro anọ. N'afọ 2002, o ritere ọla nchara n'asọmpi 400 m T53. N'afọ 2006, o ritere ọla nchara n'asọmpi 800 m T53 nke ụmụ nwoke. N'asọmpi Iko Mbaụwa nke 2011
, o ritere ihe nrite ọla edo n'asọmpi 800m T53 nke ụmụ nwoke na ihe nrite ọlaọcha n'asọmpi 400m T53 nke ụmụ nwoke. Na 2013 Championships na Lyon, France, o meriri ọla nchara na Men's 800m na 1500m T53 ihe omume. A họpụtara ya ịsọ mpi na asọmpi 2015 na Doha mana ọ kwụsịrị asọmpi ahụ.