marccolombo post Kosier, Colombo held out of Wednesday's practice

The Dallas Cowboys could be without two key members of their offensive line for the season-opener, as left guard Kyle Kosier and right tackle Marc Colombo both missed practice Wednesday.

Colombo was expected to miss 2-to-4 weeks after having arthroscopic surgery to remove loose particles in his right knee in mid-August.

Kosier has a strained medial collateral ligament in his right knee. He is three weeks into a recovery that was slated to take 4-to-6 weeks.

Tackle Sam Young also missed practice for Dallas, which opens the season Sunday night against Washington.

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