Offensive lineman Matt Kalil (left) and defensive end Nick Perry battle in 1-on-1 drills prior to the scrimmage.
Matt Barkley calls the play in the huddle during Saturday's workout.
Offensive coordinator John Morton sits on top of the adjacent baseball complex during Saturday's scrimmage to mimic what he does in the press box during games.
Coach Carroll gathers the Trojans together off the field during a mock halftime in the middle of Saturday's scrimmage.
Defensive end Malik Jackson rises up to attempt to deflect an Aaron Corp pass.