Article Photos: OKC THUNDER: Closing the door has been the key 17/21

Dallas' Dirk Nowitzki (41) works the ball against Oklahoam City's Nick Collison (4) during the NBA basketball game between the Oklahoma City Thunder and the Dallas Mavericks at Chesapeake Energy Arena in Oklahoma City, Monday, March 5, 2012. The Thunder won, 95-91. Photo by Nate Billings, The Oklahoman