Cody Ross doubled home the go-ahead run in the eighth inning Sunday and the Boston Red Sox hung on for a 2-1 decision over Baltimore. Dustin Pedroia and Ross broke a 1-1 tie with back-to-back doubles against Luis Ayala (5-5) to produce the decisive run. But Boston had to hang on in the bottom of the ninth to preserve the win, which enabled it to avoid a three-game sweep. The O\'s loaded the bases with one out against Andrew Bailey, but he retired Manny Machado on a force-out at home and struck out pinch-hitter Ryan Flaherty to rack up his sixth save. Junichi Tazawa (1-1) retired the Orioles in order in the eighth to earn the victory. Machado got the only RBI for second-place Baltimore, which stayed one game behind the American League East-leading New York Yankees despite the loss.