Allen is competing with rookie Nolan Carroll to be the team's third cornerback while Will Allen recovers from a knee arthroscopy, but knows the best way he can get on the field is to excel on special teams.
"That's a good way to earn the coach's trust, by doing your job and knowing your role on special teams," Allen said. "You've just got to take it, and don't look at it as being something negative. Look at it as a positive."
Allen, entering the fifth year of a six-year deal he signed as a rookie, said he isn't too happy with the performance of the special teams through two exhibition games. The Dolphins have allowed a blocked punt in each game.
Allen rated the unit's performance "a five or a six" on a scale of one to 10.
"We're far from our potential," Allen said. "No excuses, we've just got to go out and get the job done."