 Nyorai kuenderera mberi kweiyi ndima - Affeldt aive wechitatu-kutenderera dhizaini naKansas City Royals muna 1997 MLB dhizaini. Akapinda muchikwata muna 2002, uye akatanga chikamu chegore nokuda kwavo. Mumwaka mishanu neRoyals, Affeldt aifamba-famba achidzoka shure pakati pokutenderera kwokutanga ne bullpen. Muna 2006, akatengeswa kuColorado Rockies panguva yekupedzisira yekutengeserana, uye aive nhengo yeRockies 2007 World Series timu. Mushure memwaka mumwe chete neCincinnati Reds, akasaina neSan Francisco Giants muna2009, kwaaive nhengo ye2010, 2012, uye 2014 World Series makwikwi echikwata. 