Since the injuries have taken a toll, however, Merriman has not been the same dominant force off the edge. He has amassed only four sacks over the past three seasons, and he looks nothing like an impact player off the edge. He struggles winning against big men on the perimeter and he appears to have lost a step when he pursues. The burst and acceleration that often led to teeth-rattling collisions hasn't been there when he has played in recent years.