Now the offense can't stop scoring for him.

Cain was the recipient of an 8-3 victory over the Padres on Tuesday night. Of course, he did his part, giving up two runs in six innings. He didn't walk a batter. But unlike the pattern in most of his starts the past two years, the Giants' hitters gave him some support.

His first start in 2009, San Francisco beat Milwaukee 7-1.

His next start, the Giants scored four runs but lost 5-4. It was the only time in nine games the scuffling Giants scored more than three runs.

Then Tuesday, the offense went bonkers and rallied for eight runs. Slumping Edgar Renteria, who opened 4-for-29, hit a grand slam in the fourth inning and had a career-high five RBIs.

Cain ended his 10-start winless streak against the Padres and is the team's first two-game winner.

GIANTS 8, PADRES 3: The Giants trailed 2-1 before Edgar Renteria's grand slam put them ahead 5-2. It was the first big game as a Giant for Renteria, who signed a two-year, $18.5 million contract and has been criticized by fans. He had three hits and now is a .455 hitter off Jake Peavy. Matt Cain earned his second win with six innings of two-run ball. The Giants have won three of four.