San Antonio Spurs' Tim Duncan (21) knocks the ball away from Houston Rockets' Dwight Howard (12) during the first half of an NBA basketball game Tuesday, Jan. 28, 2014, in Houston. (AP Photo/Pat Sullivan)
Atlanta Hawks power forward Mike Scott (32) has his shot blocked by San Antonio Spurs power forward Tim Duncan (21) in the first half of an NBA basketball game Friday, Jan. 24, 2014, in Atlanta. (AP Photo/John Bazemore)
Oklahoma City Thunder's Kevin Durant grimaces after he was fouled by San Antonio Spurs' Tim Duncan during the second half of an NBA basketball game, Wednesday, Jan. 22, 2014, in San Antonio. (AP Photo/Eric Gay)
San Antonio Spurs' Tim Duncan (21) steals the ball from Oklahoma City Thunder's Kendrick Perkins (5) during the first half of an NBA basketball game, Wednesday, Jan. 22, 2014, in San Antonio. (AP Photo/Eric Gay)
Oklahoma City Thunder's Kevin Durant (35) is fouled by San Antonio Spurs' Tim Duncan (21) during the second half of an NBA basketball game, Wednesday, Jan. 22, 2014, in San Antonio. (AP Photo/Eric Gay)
San Antonio Spurs' Tim Duncan, left, is fouled by Oklahoma City Thunder's Kendrick Perkins as he tries to score during the first half of an NBA basketball game, Wednesday, Jan. 22, 2014, in San Antonio. (AP Photo/Eric Gay)
San Antonio Spurs' Tim Duncan (21) is defended by Portland Trail Blazers' Robin Lopez, left, as he tries to shoot during the first half on an NBA basketball game, Friday, Jan. 17, 2014, in San Antonio. (AP Photo/Eric Gay)
Portland Trail Blazers' Robin Lopez, center, scores as San Antonio Spurs' Kawhi Leonard (2) and Tim Duncan (21) look on during the first half on an NBA basketball game, Friday, Jan. 17, 2014, in San Antonio. (AP Photo/Eric Gay)
San Antonio Spurs' Tim Duncan, right, shoots over Portland Trail Blazers' Robin Lopez (42) during the first half on an NBA basketball game, Friday, Jan. 17, 2014, in San Antonio. (AP Photo/Eric Gay)