Hyun-Jin Ryu (7-3) allowed four hits and two runs over 6 2/3 innings in his first win since defeating the Angels May 28.
Matt Cain (5-5) was blasted for six hits and eight runs and four walks over 2 1/3 innings for the Giants, losers of 10 of their last 11 contests.
The Dodgers won for the 11th time in their last 13 games.
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