Lawrence to have X-rays on ankle

OXNARD, Calif. -- Dallas Cowboys second-round pick DeMarcus Lawrence left Tuesday’s practice early with a right ankle/foot injury suffered during pass rush drills.

Lawrence was injured during pass rush drills and limped off to get examined before he was taken by cart to the locker room. He was scheduled to have an X-ray after practice. The Cowboys are looking for Lawrence to be a major part of their defense as a rookie, as he's contending with Jeremy Mincey for a starting position,

“Hopefully it’ll be OK,” owner and general manager Jerry Jones said.

Jones has been impressed by Lawrence’s early work.

“His attitude and you can’t discourage him,” Jones said when asked what caught his eye most. “Physically his hands, his quickness, his athletic ability, but basically the fact that he doesn’t get discouraged. Matter of fact, if he’s blocked he’s that much more tenacious, and that may be the quality to have other than athletic ability as a pressure player.”

Linebacker Rolando McClain left after the early part of practice because of a stomach virus.

Others not practicing Tuesday: Tony Romo, Ronald Leary (hamstring), Darius Morris (hamstring), Ben Gardner (shoulder), Terrell McClain (ankle), Will Smith (groin), Matt Johnson (hamstring)