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Kansas City, MO (Sports Network) - Brayan Pena knocked in a pair of runs as the Kansas City Royals edged the Boston Red Sox, 4-3, in the rubber match of a three-game series at Kauffman Stadium.

Bruce Chen (1-4) scattered seven hits and three runs with five strikeouts over 6 2/3 innings for the Royals, who won for the third time in five games.

Jonathan Broxton pitched his way out of a jam in the ninth inning to earn his seventh save of the season.

Jon Lester (1-3) gave up four runs -- one earned -- on six hits and a walk through five innings, while Adrian Gonzalez drove in all three runs for Boston, which dropped its seventh game in eight tries.