(Sports Network) - Washington right-hander Jason Bergmann tries to regain the luster of a three-game stretch last month when he and the Nationals visit PNC Park for the finale of a three-game series with the Pittsburgh Pirates.

Bergmann, a 26-year-old product of Neptune, New Jersey, had a successful three-start run between May 15 and May 26, allowing 12 hits over 19 2/3 scoreless innings with 23 strikeouts against the New York Mets, Philadelphia and Milwaukee.

He was 1-0 with a pair of no-decisions in that stretch, but has lost two straight since, including a dismal three-inning outing on June 6 in which he gave up 10 hits and five earned runs in a 10-1 loss to San Francisco.

Bergmann is 0-1 with a 9.00 earned run average in three career meetings with the Pirates.

He'll be faced by Pittsburgh lefty Tom Gorzelanny, who's 0-1 with a pair of no-decisions since his last victory on May 22.

The Illinois native allowed eight hits and two runs over five innings in beating Milwaukee in that start, but has subsequently been touched for 16 hits and 13 runs in 13 2/3 innings against Cincinnati, St. Louis and Arizona.

Gorzelanny won his lone career start against the Nationals after giving up five hits and two runs in 7 1/3 innings.

He is 3-1 in six home starts in 2008 with a 4.91 ERA in 33 innings.

On Wednesday, Ryan Doumit went 3-for-4 with a home run, and Ian Snell threw six-plus solid innings, as the Pirates edged Washington, 3-1.

Snell (3-6) gave up just one run on six hits, with three walks and six strikeouts, to pick up the win, the Pirates' third in their past four games.

Matt Capps picked up his 16th save of the season after his debacle in the ninth inning of Tuesday's series opener, when he gave a two-run homer to Lastings Milledge that propelled the Nationals to a 7-6 win.

Doumit continued his hot hitting for Pittsburgh, as on Tuesday he hit a pair of homers and a pair of doubles. Wednesday, his three hits were joined by Xavier Nady and Jason Bay, who each drove in a run for the Pirates.

John Lannan (4-7) gave up only two runs on seven hits in six frames of work, but took the loss for Washington, which has dropped five of six. Elijah Dukes drove in the only run for the Nationals, while Ronnie Belliard, Jesus Flores and Felipe Lopez each had a double.

Washington has won four of six from the Pirates this season.