The Dolphins will enter the 2018 NFL season with a respectable CB group. I think Xavier Howard got better as the season went on last year and could be poised for a big season. Assuming he’s healthy, Tony Lippett is a bigger CB with tremendous upside. Bobby McCain was recently given a new contract and in my opinion played very well as a slot corner last year.
Throw in where Fitzpatrick will play, the Dolphins are really pretty good at CB but, I believe I’ve said this before, you can never have too many CBs and DEs.