COLLEGE STATION, Texas — Running back is one of positions on Texas A&M's roster with few, if any, real question marks or concerns heading into 2014.

There is talent and depth. Most of the returning players have experience. The main question might be which player emerges as the most reliable and productive.

The candidates are plenty, though, and that's pleasing to head coach Kevin Sumlin.

"We feel real good with our depth at running back," Sumlin said.

Junior running back Tra Carson has been the most consistent of the group this spring. Sumlin has praised his work several times in recent weeks, and the 6-foot, 230-pound Carson seems to be positioning himself well for the fall.

"I think Tra Carson has been very, very solid," Sumlin said. "I think James White has progressed and is probably a little bit further ahead than I thought he would be. Brandon Williams is doing well. Trey Williams -- they're all good backs. It depends on what you want to do."

Both Trey Williams and Brandon Williams had to miss brief portions of spring practice with minor injuries, but they have returned. Sumlin noted earlier this spring, particularly when Trey Williams was out, that every day he missed was "not helping his cause." Since returning, both have been able to shoulder more of the workload in practice.

"Trey's healthy and has been involved in the return game, obviously," Sumlin said. "Brandon has come back. We worked Tra Carson pretty hard early. Those guys missed a little bit, so Tra Carson's getting a little bit of a rest right now and they're catching up. But we know what we've got in those three guys."

Trey Williams is the returning yardage leader of the group, with 407 yards and six touchdowns on 58 carries last season. Carson is the returning leader in touchdowns (7) and logged 329 yards on 62 carries in 2013. Brandon Williams contributed but didn't play as much as Carson or Tra Williams, logging 44 carries for 269 yards and a score.

But with Malena (115 carries last season) gone, there are carries available. It's reasonable to expect the returning trio will get more carries, but don't count out White, a redshirt freshman, being a factor as well based on his spring performance.

"I think the surprise has been James White," Sumlin said. "He has really come on to be pretty solid. He's a guy that's going to play special teams for us this year, and then we'll see where he fits in this group. James does everything pretty good. He's big enough at 215, 220 [pounds]. He has soft hands, is a good runner, a good blocker, so he's another guy that gives us a mix."

Sumlin expects all of them to push each other as the Aggies wrap up spring practice and continue preparing for the 2014 season.

"That competition will continue and they know that," he said. "It's good for all of us to have to compete for playing time, and that's what happens in a real program."