Article Photos: Oklahoma City Thunder notebook: Defense returns for Thunder

Memphis' Tony Allen (9) reacts to a play during the NBA basketball game between the Oklahoma City Thunder and the Memphis Grizzlies at the Chesapeake Energy Arena in Oklahoma City, Thursday, Jan. 31, 2013.Photo by Sarah Phipps, The Oklahoman

Memphis' Tony Allen (9) reacts to a play during the NBA basketball game between the Oklahoma City Thunder and the Memphis Grizzlies at the Chesapeake Energy Arena in Oklahoma City, Thursday, Jan. 31, 2013.Photo by Sarah Phipps, The Oklahoman