Article Photos: Thunder notebook: Defending Dirk Nowitzki definitely demoralizing 21/39

Dirk Nowitzki (41) of Dallas  goes between Oklahoma City's James Harden (13) and Serge Ibaka (9) during game 1 of the Western Conference Finals in the NBA basketball playoffs between the Dallas Mavericks and the Oklahoma City Thunder at American Airlines Center in Dallas, Tuesday, May 17, 2011. Photo by Bryan Terry, The Oklahoman