PITTSBURGH — Chris Young has the Pittsburgh Pirates baffled.

Young dominated the Pirates again, allowing four hits over seven innings in the San Diego Padres' 9-0 victory Wednesday night.

A former Pirates farmhand, Young walked one and struck out seven. Pittsburgh has managed seven hits in 23 2-3 career innings against Young (6-3).

"I think certain guys match up better against certain teams, and he obviously matches up well against us," said Jason Bay, who had one of only two extra-base hits against Young. "The three times he's thrown, obviously, we don't have a lot of him figured out yet."

Mike Cameron had three hits and three RBIs and Khalil Greene's grand slam in the eighth inning gave San Diego a 7-0 lead. The Padres have won four of five and seven of nine.

"It was a good win for us," Young said. "I felt good. For the most part, I was able to execute my pitches pretty well. I had decent fastball command and for me that's my bread and butter. On nights when I'm able to put my fastball where I want, I'll take my chances."

Chris Duffy had two hits for the Pirates, who had won four of five.

In his two previous starts against Pittsburgh — both last season — Young took a no-hitter into the sixth inning. His no-hit bid June 4 at PNC Park lasted 5 1-3 innings and he allowed two hits in eight shutout innings. On Sept. 22, in San Diego, Young lost a no-hitter with one out in the ninth on Joe Randa's two-run homer.

Still, Young downplayed his supremacy over Pittsburgh.

"You've got to get up for every game," Young said. "It's the big leagues and if you don't have your good stuff, teams are going to make you pay. Regardless of who it is, I just try to focus on making good pitches and try to execute my game plan. Some nights it works out and other nights it doesn't."

Pittsburgh had 11 players on the roster who had faced Young before Wednesday, and they were a combined 3-for-49 (.061) against him. The Pirates went 4-for-24 against him Wednesday.

"We've not been able to do much at all with him," Pirates manager Jim Tracy said. "There is deception to him, obviously, and there's something that we're not seeing."

The best chance Pittsburgh had to score was in the sixth, when Paul Maholm singled with one out and Jose Bautista followed with a double. But Young got Chris Duffy to foul out down the third base line and Freddy Sanchez to fly out to center.

"I don't think it's ever easy," Padres manager Bud Black said.