Arian Foster has been, and could continue to be, the No. 1 running back for the Miami Dolphins, according to Adam Gase.

Jay Ajayi is currently sidelined with a bone bruise in his knee.

"(Foster) is going to be working with the ones the whole training camp," Gase said. "His resume speaks for itself. I don't think there's any question why we brought him in here. He's playing this year. Whether he's the guy that will be the first snap of the game, time will tell. He is going to be rolling with the ones."

Foster has missed 23 games over the past three seasons.