Based on Dolphins coach Joe Philbin's comments Monday, running back Lamar Miller could be ready to take on a three-down role, according to the Miami Herald.Fantasy Spin:"He has good instincts as a runner," Philbin said about Miller. "Has very, very good athletic ability. Has good speed. He can pass protect. It took him a little while to get the responsibilities down, the blitz adjustments down. At the end of the year, he was very sound in his pass protection. He has good hands, can catch the football." Miller's ADP has been steadily climbing over the last two weeks, and he is now being selected in the early third round of mock drafts.