But it's the fourth scholarship back, one who redshirted a season ago, who opened eyes during spring football for the Aggies: James White.
"I think the surprise has been James White," Sumlin said in late March. "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."
Because of the presence of three players who have SEC experience in Carson and the Williamses, there likely won't be many spare carries to go around, but White has shown he can contribute in several ways. While working on special teams, White has been part of the kickoff return team in a role similar to that of Malena the past two seasons and Carson last season.
At 6-foot, 218 pounds, White has good size and a wide range of skills to go with that size. The depth and versatility he can provide will be welcome in the SEC, where the Aggies have shown it isn't easy to get through a season without incident. Last season, Carson, Brandon Williams and Trey Williams all missed at least two games while recovering from injuries. All four active scholarship backs on the roster were used last season. Don't be surprised if that's the case this fall, too.
Throughout the spring, White showed he's ready to contribute.
"He's picked up on the offense," running backs coach Clarence McKinney said. "The tools are there. He can run the ball, he's big, he's physical, he can catch it as well as any of those guys. Just learning the offense and protection is really important for him to pick up right now."