Article Photos: OKC Thunder: James Harden leads Thunder to win, first-round sweep of Mavericks 13/32

Oklahoma City's Kendrick Perkins (5) grimaces in pain during Game 4 of the first round in the NBA playoffs between the Oklahoma City Thunder and the Dallas Mavericks at American Airlines Center in Dallas, Saturday, May 5, 2012. Oklahoma City won 103-97.  Photo by Bryan Terry, The Oklahoman