After graduating from the University of Wisconsin LaCrosse (LaCrosse State University) in 1973, Osborn Shackelford began his teaching and coaching career at Maryvale High in Phoenix Arizona. In 1979, Coach "Shack" became the third head coach for the Maryvale women's basketball program. He coached the Lady Panthers from 1979-2003 and had a 64.3 winning percentage. During his tenure, Maryvale won two invitational tournaments, 2 region titles, and were the state champions in 1989 and 1990. The Lady Panthers lost in double OT in the state semifinals in 1993. Coach Shack has coached in the