“…Interestingly, CK mastery is typically acquired outside the TE program through a long history of participation in T sport and/or coaching (Siedentop & Eldar, 1989). There is concern in TE that when pre-service teachers enter a teacher preparation program with indepth CK in only one or two sports (Kim, Lee, Ward, & Li, 2015) they will finish their program short of developing an adequate understanding of the content taught in school PE (Kim, 2016;Siedentop, 2002). Therefore, PE teachers often teach content outside their areas of expertise and sports where they lack personal performance skills (Reuker, 2016) or CK (Siedentop, 2002;Sinelnikov, Kim, Ward, Curtner-Smith, & Li, 2015).…”