(Sports Network) - Arizona right-hander Dan Haren can stay perfect for his career against Pittsburgh tonight when the Diamondbacks visit the Pirates at PNC Park in game two of a four-game series.

A 27-year-old Californian, Haren is 2-0 with a 2.60 earned run average in three lifetime starts against the Pirates, allowing 17 hits and five earned runs in 17 1/3 innings, while walking eight and striking out nine.

Haren was a winner in his last start after a two-outing losing streak, defeating Washington, 5-0, on June 1 with seven innings of scoreless, four-hit ball.

However, he is winless in four road starts in 2008, going 0-3 with a 5.25 ERA in 24 innings.

The Pirates go with Illinois-born lefty Tom Gorzelanny, who's been shelled in two consecutive outings since his last win.

The 25-year-old topped Milwaukee, 8-4, in a May 22 victory at home, scattering eight hits and allowing two runs in five innings.

He's 0-1 with a no-decision since, allowing 11 hits and 10 runs in 5 2/3 innings while walking five and striking out just two.

Gorzelanny, who's 3-1 in five home starts, is 1-0 in two career meetings with the Diamondbacks.

On Friday, Brandon Webb earned his major-league leading 11th victory, as the Diamondbacks bested the Pirates, 3-1.

Webb (11-2) was superb in allowing just one run on three hits without a walk over seven innings. He fanned three for his second straight victory after dropping his previous two.

Orlando Hudson, Stephen Drew and Webb each had a run batted in and Brandon Lyon recorded his 13th save of the season for Arizona, which snapped a three- game losing streak.

Pirates starter Ian Snell (2-6) allowed only two runs - one earned - on five hits and three walks. The right-hander struck out nine but had 108 pitches through five innings and was lifted from the game. Snell, who hasn't won since April 12, has lost his last five decisions.

Freddy Sanchez had two hits and scored Pittsburgh's only run on Jason Bay's double as the home team snapped a two-game winning streak.

These two clubs split six games in Pittsburgh last year.