Oklahoma quarterback Baker Mayfield has shoulder fatigue but does not have structural damage, a source close to the program told The Oklahoman.
Mayfield's soreness is due to "simply throwing too many reps," the source said.
The source contradicted reports earlier this week that Mayfield suffered a torn rotator cuff.
The official Sooners football Twitter account even addressed the report Wednesday night, also characterizing Mayfield's condition as shoulder fatigue.
Mayfield, a junior, is competing with Trevor Knight and Cody Thomas for the starting quarterback spot.
He sat out last season after transferring from Texas Tech.