Complex sentence: He is currently the assistant head coach at Oregon State University, having previously served two stints as the head coach in Corvallis from 1997 to 1998 and 2003 to 2014.
Split into simpler sentences: He is currently the assistant head coach at Oregon State University. He previously coached at Oregon State University, where he served two stints, from 1997 to 1998 and from 2003 to 2014.