Senior Garrett Green, who was considered by many a long shot to win the starting job, didn't receive any reps at quarterback on Tuesday.
"We did a four-man rotation the opening day to get everyone going," Carroll said. "Garrett is going to play both spots and we need to get him ready at receiver as well.
"Right now, until we get some turns, I want to keep it at a three-man rotation everyday."
It was a mixed day for the three quarterbacks that were in the rotation. All three had bright moments but also had trouble holding on to the ball.
"The offense won the day on Saturday so the defense was really jacked up about not going down 2-0," Pete Carroll said. "They came back roaring today and had a big day."
Mitch Mustain received the first-team snaps on Tuesday and made some nice throws before ending the day on a sour note.
Mustain fumbled the snap and had a pass intercepted by Will Harris on consecutive plays to end practice.
Freshman Matt Barkley showed off his strong arm and has had the most success getting the ball down the field, but also has a shown tendency to force throws, as he did at times in his senior season at Mater Dei.
On the receiving end of Barkley's interception was his roommate Drew McAllister.
"I think I just have to get used to checking down because that's something that I didn't really do in high school," Barkley said. "I just have to get used to throwing to the backs and letting them make plays as opposed to trying to force throws when I kind of see a window."
Aaron Corp had the most consistent day and scrambled out of trouble at times but didn't do anything to truly stand out from the crowd.
McCoy Shines in Return
After missing the first day of spring practice as part of his punishment for acquiring too many negative points, tight end Anthony McCoy made up for lost time with a great effort on Tuesday.
"Today was my real first day," McCoy said. "I felt really good today, once we really got going, that's when it really started hitting me again. I am getting back into it and getting a feel for the game again."
McCoy made several nice catches on Tuesday and brought great energy to the field.
"I came out here feeling great and just came with the mindset that I am going to come out here and work hard, give all that I can and show the coaches that I am hungry," McCoy said.
The talented tight end admitted that he let his teammates down by missing practice and has learned from the situation.
"I felt bad because my whole team was out here and I should have been out here with them," McCoy said. "I didn't get to share the first day with them and that kind of hurt me.
"I got passed it and learned my lesson from before and I am not going to let it happen again."
News and Notes
-Everson Griffen and Anthony McCoy returned to practice on Tuesday after missing the opening of spring practice because of disciplinary reasons.
"Both guys worked like crazy today," Carroll said. "They tried to make up for lost time. They both have responded really well."
- Tailback Stafon Johnson was limited late in practice because of discomfort in his knee.
- Safety Drew McAllister continued to show great ball skills by intercepting a pass by Matt Barkley on Tuesday.
- Will Harris ended the day on a high note for the defense by intercepting a Mitch Mustain pass and racing up the sidelines for what would have been a touchdown.
- USC's Pro Day event on Wednesday will feature possible first-round draft picks Mark Sanchez, Rey Maualuga, Brian Cushing and Clay Matthews as well as a handful of other talented prospects.
Mitch Mustain fires a pass during Tuesday's practice.
*Discuss more on the SCPlaybook.com message boards
If you have any questions, comments or suggestions you can reach Kevin Carden at firstname.lastname@example.org