Maybin's triple highlighted a three-run sixth inning off Matt Cain that propelled the Padres past the NL West-leading Giants for the second straight day. San Diego has won seven of its last nine games and handed Cain (7-5) his first loss in more than a month.
Tim Stauffer (5-5) allowed three runs in six innings for his third straight victory. He allowed three hits and walked one.
Heath Bell allowed the potential tying runs to move into scoring position in the ninth before rallying to get his 26th save.
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