SAN DIEGO — Kevin Correia is starting to regain the form that made him the most consistent starter for the San Diego Padres last year.

Correia took a one-hit shutout into the seventh inning and Jerry Hairston Jr. hit a two-run home run to lead the San Diego Padres to an 8-5 victory over the Pittsburgh Pirates on Wednesday night.

"That was as well as he's pitched all year," manager Bud Black said.

Correia faced the minimum through 6 1-3 innings before the Pirates chased him during a four-run rally in the seventh. Correia (9-7) won for the fourth time in five decisions.

"That's as good as I've felt," Correia said. "In the last month or so, I've felt pretty good but I just didn't really have everything working, and then tonight I had the offspeed pitches to go with the fastball command. I felt pretty confident out there and in control of the game."

Correia got Andrew McCutchen to fly out to left to open the seventh before allowing three straight singles to load the bases. He walked Pedro Alvarez to force in a run, prompting Black to bring in Ernesto Frieri. Frieri allowed Ryan Doumit's two-run double over Chris Denorfia's head and off the center field fence. Chris Snyder's groundout brought in another run.

Correia struck out the side in the third and sixth innings, finishing with seven punchouts and one walk. He allowed four singles.

"Overall he threw the ball very well," Black said.

All-Star Adrian Gonzalez went 4 for 4 with a walk, drove in two runs and scored twice. Miguel Tejada scored three runs for the Padres, who beat the Pirates for the fifth straight time this season. The West-leading Padres (66-46) have the best record in the NL while the Pirates (39-74) have the worst. San Diego remained 2Z\x games ahead of San Francisco, which beat Chicago. The Padres are 20 games over .500 for the third time this season.

Heath Bell pitched a perfect ninth for his 33rd save in 36th chances, and his 20th straight since May 29.

Pittsburgh starter James McDonald (1-2) was gone after allowing four runs and seven hits in 4 2-3 innings. He struck out six and walked one.

"He threw OK," manager John Russell said. "He had some deep counts, got ahead of some guys but really had trouble putting them away."

McDonald threw a career-high 107 pitches.

"I had good stuff, a live fastball, but I got too many three-ball counts after being ahead in the count 0-2 and 1-2," McDonald said. "I have to be more aggressive in putting the batters away earlier in the count."