Kammala wannan jumla: Knierim ya fara yin wasan motsa jiki yana da shekara 12. Ya fara haɗin gwiwa tare da Brynn Carman a watan Fabrairun 2006. Dalilah Sappenfield ne ya horar da su a Colorado Springs, Colorado. Ma'auratan sun lashe lambar yabo ta kasa a gasar zakarun Amurka ta 2008 da kuma lambar azurfa ta matasa a gasar zakarun Turai ta 2008.
Gasar zakarun Amurka ta 2009. Sun sanar da ƙarshen haɗin gwiwar su a ranar 9 ga Afrilu, 2009.