Ku qor sii wadida cutubkan - Oeser horyaalkeedii ugu horreeyay ee caalamiga ahaa wuxuu ahaa 2002 World Junior Championships ee Ciyaaraha fudud waxayna ku dhameysatay kaalinta siddeedaad iyada oo leh dhibco 5405 dhibcood ah. Waxay hagaajisay rikoorkeeda shaqsiyeed ilaa 5901 dhibcood si ay ugu guuleysato bilada dahabka ah 2003 European Athletics U23 Championships
Waxaad Markii ay u gudubtay heerka sare, waxay kaalinta afaraad ka gashay heptathlon-ka tartankii ciyaaraha fudud ee Yurub ee 2006 ee Gothenburg waxayna ahayd tii toddobaad ee tartanka ciyaaraha fudud ee adduunka ee 2007. Oeser wuxuu ahaa kii kow iyo tobnaad ee Ciyaaraha Olombikada Xagaaga 2008 ee Beijing. Waxay sameysay dhibco shaqsiyeed oo ah 6493 dhibcood si ay ugu guuleysato billaddii lacagta ahayd ee heptathlon ee 2009 IAAF World Championships ee Berlin. Sannadkii xigay waxay ku jirtay Kulanka Erdgas ee Ratingen, Jarmalka, iyadoo ka hortageysa tartankeeda gudaha Lilli Schwarzkopf si ay ugu guuleysato wadarta 6427.