The Dolphins DST was a disaster in 2015, and hopefully the unit will improve this season under new defensive coordinator Vance Joseph. Miami has to replace departed players like Olivier Vernon, Derrick Shelby and Brent Grimes, but the Dolphins added veterans in Mario Williams, Kiko Alonso and Byron Maxwell. Ndamukong Suh is still the primary defensive star for the Dolphins, and it will help if Cameron Wake (Achilles) returns at 100 percent. There's potential with the DST unit, but the Dolphins have to prove themselves first. Don't draft them in most leagues, but they could be added off the waiver wire during the season if they start out playing at a high level.