PITTSBURGH (AP) -Henry Blanco hit a sacrifice fly in the ninth inning and the San Diego Padres beat the Pittsburgh Pirates 2-1 on Saturday.

In a game between two teams a combined 49 games under .500, two of the runs were scored without the benefit of a hit. The winner came when Chase Headley reached on an error by second baseman Brian Bixler and Phil Dumatrait (0-2) walked the next two batters before Blanco's fly to deep center off Denny Bautista.

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Luke Gregerson (2-3) got three outs to extend his scoreless streak to 17 innings and Heath Bell worked the ninth for his 38th save in 43 opportunities. Pinch-hitter Brandon Moss singled off Bell with two out, but Neil Walker flew out to the warning track in right to end the game.

Ross Ohlendorf pitched seven solid innings for the last-place Pirates, who have lost 18 of 21. The right-hander, who allowed one run and five hits, is 0-2 with a 2.94 ERA in his last five starts.

Clayton Richard also had a strong start for the Padres, yielding one run and four hits in six innings.

Pittsburgh went in front in the first, taking advantage of two walks and third baseman Headley's error. Ronny Cedeno scored when Ryan Doumit grounded into a fielder's choice.

The Padres tied it in the third. Tony Gwynn led off with a double, advanced on Richard's sacrifice and scored on Everth Cabrera's double.

NOTES: Ohlendorf missed out on a chance to become only the second pitcher to win nine games in one season at PNC Park. ... The win was the 3,000th in Padres history.