All of the Bobby McCain haters on here will freak out about this prediction but the reality is that he is a natural leader. Xavien Howard has more talent but he's quiet, in contrast to Bobby who's verbal and more intelligent.
Other prospective captains are Kyle Van Noy (I would have him ahead of Baker - he's Flo's key Defensive guy) and Clayton Fejedelem for Special Teams. Remember Fejedelem is effectively Walt Aiken's replacement who we swooped on day 1 of free agency. He was the Bengals Special Teams captain last year. He's new to the Dolphins but he is a Special Teams pro.