Article Photos: Dirk Nowitzki replaces Ron Artest as public enemy No. 1 in Thunderland 1/51

Dallas' Dirk Nowitzki (41) works the ball against Oklahoma City's Nick Collison (4) during Game 2 of the first round in the NBA basketball  playoffs between the Oklahoma City Thunder and the Dallas Mavericks at Chesapeake Energy Arena in Oklahoma City, Monday, April 30, 2012.  Oklahoma City won, 102-99. Photo by Nate Billings, The Oklahoman