Article Photos: OKC Thunder: Defense collapses in Thunder's loss to Dallas 1/20

Dallas' Dirk Nowitzki (41) grabs a rebound next to Oklahoma City's Nick Collison (4) during an NBA basketball game between the Oklahoma City Thunder and the Dallas Mavericks at Chesapeake Energy Arena in Oklahoma City, Sunday, March 16, 2014. Photo by Nate Billings, The Oklahoman