In the third inning Sunday, third baseman Nolan Arenado fielded a grounder by Carlos Quentin and stepped on the bag. He threw to second baseman D.J. LeMahieu, who relayed the ball on to first.
Quentin was originally ruled safe at first, but the second base umpire called Seth Smith for baserunner interference as he slid into second.
It was Colorado's first triple play since shortstop Troy Tulowitzki turned an unassisted one April 29, 2007, against Atlanta. The last time the Padres hit into a triple play was April 15, 2012, at Los Angeles against the Dodgers.