DeMarco Murray doesn't expect to alternate series with Ryan Mathews in the Philadelphia Eagles' backfield.

"Murray gets all the headlines and attention, but I'm even more intrigued to see what the role is for Mathews and Sproles," NFL Media's Daniel Jeremiah told us in June. "... I kind of worry about those secondary runners when you get a carry here, a carry there. But the Eagles with their tempo, (Mathews is) going to get a full series and he's going to get a chance to get into a rhythm."

Chip Kelly's uptempo offense lends itself to alternating drives to keep fresh legs on the field.

"I don't think it will be alternating series," Murray said, per Corey Seidman of CSN Philly. "But (Mathews) is a quality back, great guy, works extremely hard. I'm sure he'll get his fair share of touches. But I don't know how the rotation will be yet, we haven't touched on it."