The Miami Dolphins currently have the 54th overall pick in the second round (pick 22 of round 2) of the NFL Draft.
Depending on what the ´Phins do in Round 1, I think they will take the best player available of the following positions - OG, CB, S, DL, LB, DE. Since I have them taking Taco Charlton in Round 1, I like Marcus Williams in the second. He has great size for a safety (6-foot-1, 202 pounds) and would compliment Reshad Jones nicely. The Utah product is known for causing turnovers, something the Dolphins were building on at the end of last season.
Davis may not be there at 54th overall, but if he is, the Dolphins would be stupid to pass on him. He has the athletic ability to move to the otuside, keeping Kiko Alonso in the middle, and would give the Dolphins a complete starting LB unit. This is a position of need and a good pick regardless.
A large build, with good power, Moton could be a coveted target for the Dolphins to kick inside to Guard. He was a four-year starter for the Broncos, and could keep Ted Larsen at bay as a backup this season, strengthening the offensive line. Moton is also a good pick because he can play tackle if Ja'Wuan James or Laremy Tunsil go down with injury.
King is a first-round talent who will likely slide to the 2nd round. The Dolphins need a safety, or otherwise will start aging veteran Nate Allen, and King can play both CB and S. He can stop the run as well as force turnovers, and had 8 interceptions his junior year. King would be a Day 1 starter for the Dolphins looking to compliment Reshad Jones.