As the USC Trojans begin their fourth week of spring ball, it has become apparent that injuries are taking a toll, as 19 players sat out on Tuesday and two more left practice due to injury.

Both wide receiver George Farmer and defensive back Demetrius Wright were forced to depart the Tuesday practice early due to injuries and there was no word on their status at the end of the day. Wright was walking and appeared to be fine, but there was concern about Farmer, who had to be carted off the field after suffering an apparent left leg/knee injury during a non-contact drill. Results of an MRI for Farmer are expected on Wednesday.

“It was a very physical practice,” USC coach Lane Kiffin said. “I liked the defensive mentality at the end in the goal-line drill. It’s been a very competitive spring. It reminds me of the spring when we first got here. We need that to establish a competitive mindset.”

As Kiffin mentioned, the Trojans ended practice with a goal-line drill that got started with Hayes Pullard stuffing a run up the middle by Buck Allen. Justin Davis tried to slash into the end zone, but J.R. Tavai came across the line and knocked the ball out as he was bringing Davis to the ground, although Randall Telfer recovered for the offense. Davis did punch in a score at the end for the offense. There was also a little skirmish between a few offensive and defensive players after one play.

“It’s always a tough line between physical play and getting penalties with the goal-line drill,” Kiffin said.

Kiffin speaks with Enfield

Kiffin said he talked with new USC basketball coach Andy Enfield on Sunday night, prior to the announcement that Enfield had taken the job.

“I talked to him about the program and about working with Pat (Haden) and Max (Nikias),” Kiffin said. “I think it’s a great hire. He brings an exciting style of play and kids will want to play in that style. He’s also a guy who understands the academic side of being at a private school.”

Brady on campus

New England Patriots quarterback Tom Brady worked out on the USC campus Tuesday, throwing passes to his new receiver, Danny Amendola. Kiffin said it is common for NFL quarterbacks to use the USC facilities in the offseason, mentioning Philip Rivers, Drew Brees and Matt Cassel as players who had thrown recently on the USC field.

Highlight plays

* Anthony Brown knocked away a pass at the sideline intended for Nelson Agholor. Brown has put together a very solid spring while consistently in the lineup as one of the starting corners.

* A few plays later, however, Brown went for a pick on a rope thrown over the middle by Max Wittek and missed, allowing De’Von Flournoy to go for a long gain. Flournoy also had a touchdown later in the drill when he caught a pass from Max Browne and split the safeties with his speed.

* Victor Blackwell caught a short pass and got loose from Torin Harris with a nice shake move.

* Kevin Greene had a sack on Cody Kessler.

* Ryan Henderson had a pick off Kessler, who was trying to get the ball to Blackwell.

* George Uko had a nice play to move along the line of scrimmage in pursuit of Davis and hold him to no gain.

* Davis provided yet another dazzling touchdown run, this one a 45-yarder behind a block from Kevin Graf.

* Allen had a 20-yard gain down the left sideline thanks to Jahleel Pinner, who got one block at the line and then hustled down field to get another block.

* Browne hooked up on a 25-yard pass to walk-on Robby Kolanz on the right sideline.

Notables in attendance

Nico Falah, Steven Mitchell, Adoree’ Jackson, Dwight Williams, Chase Blakley