Cortland Finnegan is that type of player that likes to get an edge any way he can. Many times these types of players are labeled as dirty. We saw first hand what dirty players do to their opponents. Finnegan's face mask grabbing of Andre Johnson at the line of scrimmage pushed the receiver too far. Johnson threw Finnegan and his helmet to the ground.
But Finnegan is not alone in his ability to get under the skin of the opposition with his dirty play. Here is a list of the the dirtiest players in sports.