Phil Costa's starting chance take hit with injury

ARLINGTON, Texas -- Phil Costa’s chances of winning the Cowboys’ starting center spot took a hit because of a sprained posterior cruciate ligament in his right knee.

According to sources he does not require surgery but could miss 2-4 weeks, which would put his availability for the Sept. 11 season opener at the New York Jets in jeopardy. Costa did not practice Thursday after suffering the injury in Wednesday’s practice.

Before getting hurt Costa continued to work with the first team the last two weeks even with the return of Andre Gurode from June knee surgery. Coach Jason Garrett said Thursday discussions regarding who would start at center had not taken place yet but added he would like Costa could be in the mix.

It is possible Costa or Gurode could move to left guard and the other would remain a center; however, the Cowboys have liked how rookie seventh-round pick Bill Nagy has performed over the last two weeks at left guard. Nagy will make his second start of the preseason Saturday at Minnesota.

Undrafted rookie Kevin Kowalski replaced Costa as the second-team center Thursday and spent time after practice working with quarterback Jon Kitna on shotgun snaps.

Veteran guard Montrae Holland is expected to be back to practice next week after missing time with a back injury. He has stepped up his conditioning and rehab work the last few days, but he would have little time to get ready for the preseason finale on Sept. 1 at Miami.