Starting left guard Kyle Kosier left Wednesday's morning practice early with a knee injury. The team has not made an official diagnosis or announcement, but very early indications are a possible sprained MCL.
Kosier will have an MRI today. Defensive end Marcus Spears suffered a sprained MCL on the final full day of practice in San Antonio, and the timetable was four-to-six weeks. We'll provide updates as the come available.
The Cowboys are already without starting right tackle Marc Colombo, who had arthroscopic knee surgery Monday to remove loose particles and could miss at least two weeks.
Montrae Holland replaced Kosier in team drills. Kosier also doubles as the primary backup center, which will mean more work for rookie Phil Costa.
*-Rob
*@robphillips3 (Twitter)
