Whakaotihia te rerenga e whai ake nei: Ko te toa tuatahi a Oeser o te ao ko te 2002 World Junior Championships i roto i te Athletics a ka mutu ia i te tuawaru o nga waahi me te kaute 5405 tohu. I whakapai ake ia i tana rekoata whaiaro ki te 5901 tohu ki te wikitoria i te mētara koura i te
2003 Pākehā Athletics U23 Championships. I te neke atu ki nga taumata matua, i mutu ia i te tuawha o te heptathlon i te 2006 European Athletics Championships i Gothenburg, a ko te tuawhitu i te huihuinga i te 2007 World Championships in Athletics. Ko Oeser te tekau ma tahi i nga Orimipia Raumati 2008 i Beijing. I whakatauhia e ia he tohu whaiaro 6493 hei wikitoria i te mētara hiriwa i te heptathlon i te 2009 IAAF World Championships i Berlin. I te tau e whai ake nei i te Hui Erdgas i Ratingen, Tiamana, i aukati ia i tana hoa whakataetae a Lilli Schwarzkopf ki te wikitoria me te 6427 katoa.