Article Photos: OKC Thunder notebook: MRI confirms Kendrick Perkins has hip strain 27/31

Dallas' Dirk Nowitzki (41) tries to get between Oklahoma City's Kevin Durant (35), Nick Collison (4), and Russell Westbrook (0) 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