SANTA CLARA, Calif. -- Results of an MRI on the throwing shoulder of veteran Colt McCoy Friday could impact the battle for the San Francisco 49ers' No. 2 quarterback job behind Colin Kaepernick.
McCoy, who has started 21 games for the Cleveland Browns, went into Thursday night's 10-6 preseason loss to the Denver Broncos in an even battle with Scott Tolzien for the backup job. Tolzien, who has never started an NFL game, came out in better position if only because he remains healthy.
McCoy was injured when he was stopped for a 1-yard loss on a broken play.
"In hindsight I probably would have played that a little bit different," McCoy said of the play. "First time in a uniform in a new place. Lots of excitement. I was actually feeling pretty good up until that point. Having fun. This is a sweet place. So that's a little frustrating."
McCoy referred to the injury as a stinger and confirmed it is the same shoulder he injured playing for Texas in the January, 2010 BCS Championship against Alabama. Effects from that injury lingered for more than a year and he said recently he is still not 100 percent.
After the game, McCoy said the injury was "more in my neck" this time and is not nearly as severe as the one in the BCS game. He said he believes the MRI is precautionary.
In the game, McCoy completed 3 of 7 passes for 41 yards and was intercepted three plays after he said he was injured, then came out. In retrospect, he said he probably should have come out of the game as soon as he realized he was injured. He remained on the sidelines in full uniform throughout the game.
"These things are different when you're dealing with nerves and stingers and stuff," McCoy said of the injury. "You never know."
Tolzien, who has never started an NFL game, completed 15 of 26 passes for 158 yards and one interception, and admitted after the game he was not happy with his performance.
"Right now all I can remember are the mistakes, the things I need to improve," he said. "I am not satisfied at all. There is work to be done."
--Team correspondents for The Sports Xchange contributed material for this story.