Lamar Miller is no longer the only horse in the Miami Dolphins' stable of running backs. He is now competing with rookie Jay Ajayi for the snaps, the carries, the touches and the opportunities.
But Miller is also competing with every other soon-to-be free-agent running back. When the 2015 season is through and the 2016 NFL offseason begins, Miller will hit the open market, where he will either be looking for new work or hoping to stay in familiar surroundings in Miami. If he elects to stay with the Dolphins, his cozy role as the No. 1 back may be compromised due to the presence of Ajayi.