Complex sentence: Taylor served as running backs coach before being promoted to assistant head coach of player development in 2005, which called on him to manage the academic and social direction and development of student-athletes in conjunction with their position coaches and the coordinators.
Split into simpler sentences: Taylor served as running backs before being promoted to assistant head coach of player development in 2005. In that capacity, he managed the academic and social direction and development of student-athletes in conjunction with their position coaches and the coordinators.