The Facts: A frontrunner has emerged at the Dolphins' running back position. HC Adam Gase said Thursday that second-year tailback Ajayi is the clubhouse leader when it comes to the vacant starting spot. "He's been one of those guys he's been here every day. He's done everything right. You can tell he's looking to improve. He doesn't say much, just keeps working," Gase said. "The rest of that group has done a good job to try and keep up with him, but obviously he's kind of separated himself from that group as far as the consistency of what he does day in and day out."

Diehards Line: Ajayi -- a former Boise State standout whom the Dolphins selected in the fifth-round of the 2015 NFL draft -- has put some distance between himself and Damien Williams, Daniel Thomas, Isaiah Pead, Jahwan Edwards, and Kenyan Drake, the 2016 third-round pick, who hasn't practiced with the team yet. Gase went as far as to say his priority now is to figure out the strengths of what Ajayi's understudies bring to the table so the coaches can figure out how to best infuse them into the offense. Gase said the exhibition season will be telling for that entire unit. The Dolphins need to replace Lamar Miller, who left the as a free agent. Whoever gets the starting job needs to be an accomplished pass catcher and decent pass blocker because Gase's offense uses a one-back set that leans heavily on the tailbacks in the passing game.