Jim Rice hit two long two-run homers--giving him five homers and 10 RBI in three games--and Carl Yastrzemski hit the 444th of his career as Boston won easily in New York.
The 13-hit attack by the Red Sox, who have totaled 30 runs and 43 hits in their last three games against New York, enabled Bruce Hurst to beat the Yankees for the fourth time in his career without a loss.
Hurst (6-7) allowed nine hits in 6 1/3 innings, including two-run homers by Lou Piniella in the first inning and Dave Winfield in the third. It was Winfield's 13th homer, but his first since June 8, and the runs batted in were his first since June 18.
Winfield's homer tied the game at 4, but Jerry Remy singled with one out in the Boston fourth. One out later, Rice hit a drive off the facade of the third deck in left field, a rarely reached section of Yankee Stadium.
Yastrzemski drew a bases-loaded walk in the first inning. In the Boston second, after Wade Boggs' sacrifice fly tied the score, 2-2, Rice gave the Red Sox a 4-2 lead with a 400-foot drive to left center off starter Matt Keough (3-5). The home runs were the 20th and 21st for Rice, who began the game tied with Atlanta's Dale Murphy and San Francisco's Darrell Evans for the major league lead.