Article Photos: Oklahoma City Thunder: Russell Westbrook's injury rocks Thunder 181/197

Oklahoma City's Russell Westbrook (0) is fouled as he shoots in front of Dallas' Ian Mahinmi (28) and Dirk Nowitzki 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. Photo by Bryan Terry, The Oklahoman