SAN FRANCISCO (AP) — Yusmeiro Petit had all of an hour to prepare for his spot start, and he hadn't thrown off a mound for seven days while only playing catch. There was no time to study San Diego's hitters, either.
Petit dazzled in place of injured ace Matt Cain, pitching six innings to lead the San Francisco Giants past the Padres 6-0 Tuesday night.
"That's my job," said Petit, who was one out from a perfect game last September against Arizona shortly after joining the rotation. "I'm prepared for it any time for that, one moment before the game telling me 'you're going to start the game.' I've done it before. It's normal for me."
Angel Pagan led off the first inning with a homer and Buster Posey connected two batters later to give Petit an early boost.
Cain was scratched after cutting the tip of his right index finger. Cain was in the clubhouse kitchen making a sandwich and had a knife in his hand when the utensil dropped. Cain tried to catch it and cut his finger about a half-inch at the tip. He took batting practice, but then tried to throw and kept opening the cut.
He expects to make his next start, Monday at Pittsburgh.
"It's obviously really, really bad timing," Cain said. "Petit did an unbelievable job today. He picked it up and the guys scored a bunch of runs. Hopefully this isn't a big deal ... and it should be fine in a couple days."
Petit (2-1) didn't allow a hit until Everth Cabrera's leadoff single in the fourth.
Hector Sanchez, starting at catcher with Posey at first base, hit a two-run single and a sacrifice fly.
Petit allowed three hits with four strikeouts and no walks.
It was his first start not allowing a run since he tossed a one-hitter last Sept. 6 at home against Arizona. He lowered his ERA from 3.68 to 2.61.
Jean Machi pitched two innings and Santiago Casilla finished the 2-hour, 28-minute, three-hitter, San Francisco's second shutout this season. The Padres were blanked for the fourth time.
The Giants said Cain wouldn't require stitches.
"What a great effort," manager Bruce Bochy said of Petit. "Any time you lose your starter and the swing guy goes in there and gives you six innings like that, that's such a big lift for the club."