SAN ANTONIO -- Right now, the Dallas Cowboys can say without a doubt Felix Jones is their best running back.
Tashard Choice is hurt.
Marion Barber has been cut.
After that, it's a second-year fullback, a couple of draft picks and three undrafted free agents.
If Jones isn't the best running back in this crowd, there's something wrong.
"Felix has gotten off to a very good start in camp," Cowboys coach Jason Garrett said. "He's running the ball well. He's in good shape. His work over the first four or five days of practice has been outstanding."
At least the Cowboys know what they have in Jones.
He was their leading rusher last season with 800 yards. He was their top receiving back, and third on the team in receptions behind Jason Witten and Miles Austin.
"As anybody knows who's followed our football team, he's a dynamic playmaker," Garrett said.
And Jones, starting his fourth year with the Cowboys, said he feels as good as he's ever felt.
"I always feel good when I come out here, and I always prepare myself for camp," he said. "I can honestly say I feel a lot better this year."
But after Jones, the Cowboys can only wonder what they have.
Third-round pick DeMarco Murray is out with a hamstring pull he suffered in a workout before camp, and he'll probably miss at least one preseason game, owner Jerry Jones said.
Choice is out perhaps another week with a calf strain suffered early in the first practice.
Frank Warren, Phillip Tanner and Lonyae Miller are undrafted free agents.
The fullbacks are second-year undrafted free agent Chris Gronkowski, who carried five times last year, and rookie Shaun Chapas, a seventh-round pick.
"It's kind of hard to evaluate, primarily DeMarco Murray," running backs coach Skip Peete said.
"We've had a chance to study him as a player in college, but you want to see him in our environment, with our plays, going to meetings -- which he's doing -- but then also coming out on the field and executing those things."
At least the Cowboys know something about Miller, a 6-foot, 232-pounder in his second year from Fresno State who spent most of last season on the practice squad. He is the Cowboys' biggest runner and had 4.43 speed at the NFL Combine in 2010.
"You talk about guys gaining confidence and developing from year to year -- he's a different guy so far this camp than he was last year," Garrett said. "A lot of it has to do from the experience that he had, a little bit more of an opportunity from the end of last year, and he's built on that."
The Cowboys also like their first impressions of Tanner, who played four seasons at Middle Tennessee State and finished as the school's fifth-leading touchdown scorer all-time. But scoring is nothing new for him. He had 76 touchdowns as a high schooler at Dallas Kimball.
"He's had some nice runs. And it seems like he has a good feel and understanding of the passing game when it comes to pass protection and catching the ball," Peete said. "So I've been excited about him."
Of course, Warren and Chapas are also getting their chance. And no cuts need to be made until after the third preseason game.
But with the Cowboys also missing two of their starting linemen, Doug Free and Kyle Kosier, Peete said it's tough to get an idea of how the running game fits as a whole.
"I don't think you can get a good feel of the big picture yet," he said. "We've got to wait until we get the whole team here, and then I think we get a couple of weeks of guys working together to where they feel comfortable with each other, then you ask me that question again."
Carlos Mendez, 817-390-7407