Article Photos: NBA: Several top teams limping into the playoffs — but not the Thunder 5/22

Oklahoma City's Nick Collison (4) is called for the blocking foul on San Antonio's Tim Duncan (21) during an NBA basketball game between the Oklahoma City Thunder and the San Antonio Spurs at Chesapeake Energy Arena in Oklahoma City, Thursday, April 4, 2013. Photo by Nate Billings, The Oklahoman