Giles hits 3-run HR as Padres deny Webb 20th win

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SAN DIEGO (AP) -- Brian Giles and Kevin Kouzmanoff both drove in three runs as the San Diego Padres denied Brandon Webb his 20th victory with a 9-2 win over the Arizona Diamondbacks on Tuesday night.

Webb (19-5) lost in his first bid to become the NL's first 20-game winner since 2005 with one of his few bad outings this season, allowing six runs and nine hits in 4 2-3 innings.

Giles hit a three-run homer and Kouzmanoff added a two-run double in a five-run third inning as Arizona lost its third straight and fourth in five games. Kouzmanoff added an RBI double in the seventh.

Chase Headley drove in two runs for San Diego.

The Diamondbacks retained their three-game lead over the Los Angeles Dodgers in the NL West.

Rookie Chad Reineke (2-1) pitched five innings for the win and combined with five relievers on a three-hitter.