BOSTON—Dustin Pedroia homered in the seventh inning to begin Boston’s comeback from a four-run deficit, and the Red Sox beat Baltimore 5-4 on Wednesday when pitcher Jim Miller’s threw away a bunt for a game-ending error.

Pedroia went 3-for-4 and raised his AL-leading average to .333. He is 21-for-34 (.618) in his last eight games.

Boston, 48-19 at Fenway Park but 34-38 on the road, began the day four games behind Tampa Bay in the AL East and led the AL wild-card race by four games.

Baltimore, which has lost six straight and 11 of 12, took a 4-0 lead in the f...

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