Reporting live from Oxnard, CA: Bad news for Dallas Cowboys. Yet another key injury for the Boys: Kyle Kosier limped off the practice field as seen here on Wednesday morning with an apparent leg injury.

Kosier was injured in the first practice in Oxnard during team drills and walked to the locker room with head athletic trainer Jim Maurer. Former Cowboys lineman Nate Newton of ESPN 103.3 FM in Dallas reports that the injury is a sprained knee. Kosier will have an MRI this afternoon.

Here is a shot of Kosier, in happier times, just moments earlier coming into practice: