Mezue ahịrịokwu na-esonụ: Ọ bụkwa onye otu otu mmeri Biathlon World Championship relay team na 2001, na ndị otu 2004 nke meriri ọla. Na Biathlon World Championship 2007 na Antholz, Defrasne nwetara ọla nchara, na 12.5 km na-achụso na ọlaọcha na Mixed Relay ihe omume. N'afọ 2009 na
World Championships na Pyeongchang, Defrasne so na ndị otu mmeri nke ngwakọta.