Zack Martin takes some center snaps

IRVING, Texas -- One of the things teams liked about Zack Martin entering the draft was his versatility.

He started 50 of 52 games at left tackle at Notre Dame. He has been plugged in as the Dallas Cowboys’ right guard since he was picked in the first round.

This week he has added some work at center.

He never played center before and only snapped for some teams in draft workouts.

“It’s hard,” Martin said. “I told [starting center Travis Frederick] the first time I was in there and came to the sideline, ‘God, you got a lot going on up there. You’ve got to know a lot.’ Just trying to get better every day but there’s definitely a lot going on over the ball.”

Frederick is the unquestioned starter, and Mackenzy Bernadeau, who is competing for the left guard spot, is the backup. Martin could become an emergency fill in.

“He’s a really, really smart football player,” coach Jason Garrett said. “You can tell in how he played on college tape and you can tell from minute one since he’s been here, both in the classroom and on the field. The game comes very easily to him from a mental standpoint. He doesn’t seem to struggle with the different looks, playing different spots. There’s a lot of poise and confidence. Now, he’s got a long way to go. Don’t get me wrong, he’s young to this whole thing. He’s had about 10 practices with us ... but the versatility, we viewed him as a guy who could potentially play five offensive line spots.