Pedzisa mutsara unotevera: Oeser akatanga kukunda mumakwikwi epasi rose muna 2002 paWorld Junior Championships in Athletics uye akapedza ari pachinhanho chechisere aine mamakisi 5405. Akavandudza nhoroondo yake pachake kusvika pamapoinzi 5901 kuti akunde menduru yegoridhe pa
2003 European Athletics U23 Championships. Achikwira kumusoro kune vakuru vakuru, akapedza chechina mu heptathlon pa2006 European Athletics Championships muGothenburg uye akanga ari wechinomwe mumutambo pa2007 World Championships muAthletics. Oeser akanga ari wechigumi nerimwe pamitambo yeOlympic yeZhizha ya2008 muBeijing. Akagadza pachake zvakanakisisa 6493 pfungwa kuhwina sirivha menduru muna heptathlon panguva 2009 IAAF World Championships muBerlin. Gore rakatevera racho akanga ari paMusangano weErdgas muRatingen, Germany, achidzivisa mukwikwidzi wake wemumba Lilli Schwarzkopf kuti akunde nehuwandu hwe6427.