The Miami Dolphins lost Lamar Miller, but general manager Chris Grier says he's confident with a rotation of running backs that includes Jay Ajayi, Damien Williams, Jahwan Edwards, Daniel Thomas and Isaiah Pead.

"I think we're comfortable," Grier told the Miami Herald. "I think (with) Coach (Adam) Gase's history of what he has done with running backs, these guys all fit what he's looking for in terms of their skill sets. But again, we'll take any opportunity we can to add at any position if it's a good football player."

The Dolphins signed C.J. Anderson to an offer sheet and chased Chris Johnson earlier this offseason, but lost out on both.

Miami holds the No. 13 pick in the first round of the NFL draft.