The Miami Dolphins parted ways with 8-year veteran guard Frank Middleton on Monday. Middleton has missed parts of the past two seasons with various leg injuries. "Frank's injury didn't allow him to get back in the kind of condition that he would like to be in to sustain the kind of performance that would've allowed him to make our team and contribute to our team," Dolphins coach Nick Saban said. "We thought the risk would be worth it to see if he could help us."