#5. Miami Dolphins: Dallas Thomas
PFF grade (position rank): -47.9 (82nd)
2015 salary cap hit: $761,594
Thomas was the worst guard in the NFL this season, according to Pro Football Focus. He ranked in the bottom two for both pass blocking and run blocking, and Ryan Tannehill’s development certainly wasn’t aided by Thomas’ poor play.
Thomas gave up 10 sacks, the most of any guard, and 36 QB hurries, which placed him in the top three. It’d be a shock if new Dolphins coach Adam Gase decided to give Thomas another shot at a starting job in 2016.