NORMAN, Okla. (AP) - For most of three seasons, Brennan Clay has bided his time, waiting for his chance to be the starting running back for No. 14 Oklahoma.

That chance came Saturday against Iowa State and Clay shined with a 157-yard effort. His emergence gives Oklahoma coach Bob Stoops a good problem as the Sooners (6-2, 4-1 Big 12) prepare to host Baylor (4-4, 1-4) Saturday - a slew of running backs who have produced in big games.

Clay replaced the injured Damien Williams, who ranks in the top five in the Big 12 Conference in rushing and had 167 yards in a win over Texas. But neither was the starter in the season opener - that was former walk-on Dominique Whaley. Stoops said Monday that Whaley is healthy despite receiving limited carries in recent weeks.