SAN DIEGO -- Tyler Chatwood pitched three-hit ball for eight innings to lead the Colorado Rockies over San Diego 2-0 Wednesday, the Padres' eighth shutout loss in 28 games this season.
Making his sixth start since Tommy John surgery, Chatwood (4-2) struck out seven and walked one. Jake McGee pitched perfect ninth for his seventh save in eight chances, helping the Rockies win for just the seventh time in their last 27 games at Petco Park and avoid a three-game sweep.
Cesar Vargas (0-1) allowed one run, four hits and three walks in six innings.
Colorado went ahead in the fifth when Tony Wolters walked, took third on Chatwood's single off the glove of shortstop Alexei Ramirez and scored when Christhian Adams grounded into a forceout.
DJ LeMahieu's squeeze bunt scored Mark Reynolds in the ninth against Brad Hand.
Ramirez hit an inning-ended grounder in the seventh after Brett Wallacedoubled with two outs and Melvin Upton Jr. walked.
Padres: RHP Tyson Ross, on the disabled list since April 5 because of inflammation in his pitching shoulder, has yet to begin his throwing program.
Rockies: LHP Chris Rusin (1-0, 1.69 ERA) is to face San Francisco on Thursday night in his second start this season. He didn't earn a decision Friday when he allowed one hit in five scoreless innings at Arizona.