Article Photos: Thunder notebook: Kendrick Perkins, Tony Allen have unpleasant exchange 15/77

Oklahoma City' Russell Westbrook (0) goes after a loose ball against Memphis' Mike Conley (11) during game one of the Western Conference semifinals between the Memphis Grizzlies and the Oklahoma City Thunder in the NBA basketball playoffs at Oklahoma City Arena in Oklahoma City, Sunday, May 1, 2011. Photo by Chris Landsberger, The Oklahoman