OKLAHOMA CITY — Kevin Durant and the Oklahoma City Thunder denied San Antonio a 20th straight NBA victory Thursday, beating the Spurs 106-94 in a battle of Western Conference powers. The Spurs arrived in Oklahoma City with a chance to extend their club-record winning streak and strengthen their grasp on the top seed in the West. But Durant kept a run of his own alive as he scored 28 points with seven rebounds to lift the Thunder. Durant has now scored 25 or more points in 39 successive games, the longest such streak since Michael Jordan strung together 40 straight games of 25 points or more in the 1986-87 season. Russell Westbrook scored 27 points and handed out six assists for the Thunder. Serge Ibaka notched a double-double of 11 points and 12 rebounds and Reggie Jackson chipped in 14 points off the bench for the Thunder. Patty Mills led the Spurs with 21 points, while Tim Duncan delivered 17 points and eight rebounds. Kawhi Leonard also scored 17 points in the setback, the Spurs' first defeat since they fell 106-85 to Phoenix on February 21. Mavericks 113, Clippers 107 Dirk Nowitzki scored 26 points and pulled down 11 rebounds as the Dallas Mavericks held off the Los Angeles Clippers 113-107. The win put the Mavericks a half game ahead of the idle Phoenix Suns and Memphis Grizzlies and alone in the No. 7 spot in the Western Conference playoff race. Jose Calderon scored 19 points and Vince Carter came off the bench to add 16, hitting four of Dallas's 14 three-pointers. Samuel Dalembert and Monta Ellis chipped in 12 points apiece. Blake Griffin had a triple-double with 25 points, 11 assists and 10 rebounds for the Clippers, who saw a four-game winning streak end. Darren Collison scored 22 points, DeAndre Jordan finished with 21 points and 15 rebounds, and Chris Paul had 17 points and nine assists. — Agencies