The Giants won their second in a row after losing a season-high five in a row.
Pirates 8, Diamondbacks 5
In Phoenix, Randall Simon hit a three-run homer off Matt Mantei in the 12th inning to lift the Pittsburgh over the Arizona Diamondbacks.
Mantei (3-2), pitching his second inning, walked Brian Giles with one out, then Aramis Ramirez singled just beyond the glove of third baseman Matt Williams.
Simon hit Mantei's first pitch into the right-field seats for his fourth home run of the season. As he trotted around the bases, he exchanged words with Mantei and both dugouts were warned by the umpires.
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