NORMAN, Okla. (AP) — Oklahoma will start figuring out who will replace Heisman Trophy-winning quarterback Baker Mayfield when spring practice opens Saturday.

Mayfield left as one of the most productive quarterbacks in college football history. He led the Sooners to the College Football Playoff twice and is the only quarterback to finish in the top four of the Heisman race three times.

The top two contenders will be last year's backup, redshirt junior Kyler Murray, and redshirt sophomore Austin Kendall. Redshirt sophomore Tanner Schafer will get a look, too.

Coach Lincoln Riley is looking for a...