Article Photos: OKC Thunder: Thunder puts it all on the line, the free-throw line 23/51

Oklahoma City's Serge Ibaka (9) and assistant coach Maurice Cheeks hold back Kendrick Perkins (5) from Dirk Nowitzki of Dallas during Game 2 of the first round in the NBA basketball  playoffs between the Oklahoma City Thunder and the Dallas Mavericks at Chesapeake Energy Arena in Oklahoma City, Monday, April 30, 2012. Photo by Nate Billings, The Oklahoman