1. Ryan Tannehill is beginning to look like a veteran quarterback. He's making better checks at the line of scrimmage, appears to be throwing a better deep ball and is using the middle of the field better than he did in his rookie season. Tannehill, who had a 76.7 passer rating last season, needs to make drastic improvements in Year 2 if this franchise is going to turn the corner.
2. Former UM standout Lamar Miller is viewed as the front-runner to become the Dolphins' new starting tailback. But the second-year player, who averaged 4.9 yards per attempt on his 51 carries last season, needs to show he can pass protect and stay healthy to keep Daniel Thomas and rookie Mike Gillislee from unseating him.
3. Even though Tannehill has plenty of new weapons, which include Pro Bowl receiver Mike Wallace, holdovers like Brian Hartline and Armon Binns remain his favorite targets during the offseason program. Chemistry takes time to develop and Tannehill's working to establish it with Wallace, Brandon Gibson and tight end Dustin Keller.
4. Jared Odrick spent all offseason working as a defensive tackle and could be settling in. It is possible this two-year starter at defensive end could be moved inside permanently, sharing playing time with Paul Soliai and Randy Starks.
6. Veteran kicker Dan Carpenter and rookie Caleb Sturgis, a former University of Florida standout, have the fiercest position battle going into camp. Coach Joe Philbin said the coaches are tracking every kick and kickoff and the most consistent player will get the job. So far Sturgis has a leg up on Carpenter.
8. Brent Grimes and Wallace had some of practice's best one-on-one battles, and those duels proved that Grimes, a former Pro Bowler, is fully recovered from the Achilles injury he suffered in last year's season opener for the Falcons. The free-agent addition used the offseason to lock up a starting cornerback spot. Training camp will determine who lines up opposite Grimes.