Roth said he hasn't played linebacker in a long time but was confident he could do it if that's what the Dolphins asked him to do.
Roth was a linebacker in high school and wound up at Iowa after being recruited by Nebraska and Miami.
He closed out his career at Iowa by being named second-team AP All-American and first-team All-Big Ten. He had 15 tackles for loss and 8.5 sacks in 2004.
Roth played special teams in his first couple of years at Iowa and blocked 12 kicks as a senior in high school. He also was a wrestler in high school, going 31-0 and winning a state title as a senior.
Roth is a tremendous pass rusher whose wrestler background has helped him with leverage against the run.
Roth said he hadn't been told by Nick Saban where the Dolphins would use him.
Saban, incidentally, might have had good insight on Roth because of his association with Hawkeyes coach Kirk Ferentz, with whom he coached with the Cleveland Browns in the early 1990s.