- Harper, TX/ Harper HS
Pre-Schreiner Awards: 1st Team All District 2011-12, Academic All State 2011-12, All
Area 2011-12, 2nd Team All District 2010-11, All Tournament Johnson City 2010,2012,
All Tournament TMI 2011-12
Personal: Callen is the son of Chris and Holly Stevenson and has two siblings, Guy and Quinn. He is a Computer Science major at SU.