Posted by ESPN.com's Tim Griffin
Texas coach Mack Brown has a simple objective in order to determine who will be backing up Colt McCoy at quarterback.
"Each of them needs to convince their teammates and their coaches that they can start and win all of the games if Colt wasn't playing -- next year and the following year," Brown said. "They have to have the mentality of a starter. We need to do what they do best, but we also need to be able to call anything we feel is necessary to win the game."
That means that McCoy's work will be a little limited during scrimmages with Chiles and Harris getting most of the snaps, Brown said.
"Colt has established himself as a leader and he is our quarterback," Brown said. "We want to see John and Sherrod continue to improve and get better and take over if Colt needs to step out."
McCoy set a national record by completing 76.7 percent of his passes as he threw for a school-record 3,859 yards.
That proficiency would seemingly make McCoy's work this spring rather mundane. But Brown isn't approaching it that way.
"We've got to get Colt what he needs to try to improve," Brown said. "We'll work him a lot in the drills and then scrimmage John and Sherrod more than Colt. We want Colt to be fresh but still to get his work."