The Miami Dolphins defense went through some significant defensive changes this offseason. Josh Boyer was relieved of his duties as defensive coordinator after a disappointing season from the unit. Vic Fangio was brought in to implement a new system and expectations are pretty high due to his track record with coaching defenses. Chris Grier made another trade to acquire a star player in Jalen Ramsey and added more firepower to the secondary when they drafted Cam Smith in the second round. Not much changed up front as the defensive line remains intact but David Long Jr. was brought in to bolster a weak linebacker unit.