NORMAN, Okla. (AP) — Oklahoma wrapped up the spring still unsure how to fill the voids left by playmakers Samaje Perine, Joe Mixon and Dede Westbrook.

Perine left Oklahoma as the career rushing leader. Mixon set the school record last season for all-purpose yards in a season. Westbrook was a Heisman finalist who won the Biletnikoff Award as the nation's top receiver.

All that made spring practice important to see who might surround quarterback Baker Mayfield, a Heisman finalist a year ago. It's still a work in progress __ the offenses were shaky during the White's 14-13 victory over the Red on...