Big Game Bob leaves behind quite a legacy at Oklahoma.

Bob Stoops shocked college football Wednesday with his surprise announcement that he is retiring immediately as the Sooners' coach, handing the program over to 33-year-old assistant Lincoln Riley with less than two months before preseason practice starts.

It's a question of when — not if — the 56-year-old Stoops earns his invitation to the College Football Hall of Fame. Here's a look back at how the former assistant to Steve Spurrier at Florida and Bill Snyder at Kansas State wound up becoming the winningest coach in Oklahoma history:

THE...