IRVING -- The Cowboys are down to their third left guard of the season.
Kyle Kosier the starter most likely won't play Sunday vs. Jacksonville. Montrae Holland, who has started twice for Kosier, is iffy for the game this week with a groin injury as well.
Now enters Phil Costa, who allowed one sack on Monday, but other than that, earned the praise of coach Wade Phillips.
"Smart guy. Very physical," Phillips said of Costa, an undrafted guard/center from Maryland. "The kind of guy you want on your team. That's why we kept him."
There was a possibility center Andre Gurode could move to left guard and Costa, who gets snap at center, switches spots.
Phillips said that's not happening because the team wants Gurode to remain where he is.
"We changed that," Phillips said. "We didn't want to change Andre's position. Therefore, we started working Costa more to be the backup guard in case anybody went out. I guess we didn't inform everybody."
As of now, Costa is the only healthy guard on the active roster. Phillips said the team has no plans to move someone from practice squad, such as tackle guard Travis Bright.
"We have a lot of tackles, don't have many interior people. The ones we have are injured. We'll have to address that situation."