Article Photos: NBA Playoffs: Dallas broadcaster says these aren't the same Mavericks, but 'Dirk is still Dirk' 32/50

Oklahoma City's Kendrick Perkins (5) knocks the ball away from Dallas' Dirk Nowitzki (41) in the fourth quarter during game one of the first round in the NBA playoffs between the Oklahoma City Thunder and the Dallas Mavericks at Chesapeake Energy Arena in Oklahoma City, Saturday, April 28, 2012. Oklahoma City won, 99-98. Photo by Nate Billings, The Oklahoman