After being rested during Saturday's Spurs win over Atlanta, Duncan returned with a vengeance, going 10-of-17 from the field with five assists as San Antonio racked up its fifth straight win.
Tony Parker added 20 points with eight helpers and Kawhi Leonard scored four of his 18 points during a 15-3 game-ending run that saw the Spurs erase a late seven-point deficit and cruise to the victory.
Leonard also grabbed seven rebounds and Tiago Splitter supplied 10 points with 12 boards for San Antonio, which improved to 33-11 on the season.
Notable deaths of 2014 [PHOTOS]
Michael Sam cut from the Dallas Cowboys