Mezue ahịrịokwu na-esonụ: Lammert nwetara ihe nrite mba ụwa mbụ ya na 2003 European Athletics Junior Championships, ebe o nwetara ihe nrite ọla nchara. Ọ bịara nke ise na 2005 European Athletics Indoor Championships, merie aha agbapụ na 2005 European Athletics U23 Championships, wee gaa na-anọchite anya obodo ya na 2005 World Championships na Athletics mgbe e mesịrị n'afọ ahụ. N'afọ 2006, ọ bụ onye mmeri German na-atụba ma n'ime ụlọ ma n'èzí ma merie ihe omume ya na
Iko Mbaụwa 2006. Ọ bụ onye nke anọ na 2006 IAAF World Indoor Championships wee nweta ihe nrite mbụ ya na 2006 European Athletics Championships, na-ewere ọla nchara na 19.17 mita.