Dolphins RE Olivier Vernon has been "dominating" LT Jonathan Martin in training camp practices. The Dolphins are trying to figure out if Martin is a problem, or if Vernon is blossoming into a legitimate threat off the edge as he enters his second season. Vernon posted 3.5 sacks in very limited action as a rookie, and he entered camp atop the depth chart at right end. He spent the offseason working out with and learning pass-rush moves from teammate LE Cameron Wake.