BOSTON—Mike Yastrzemski enjoyed a visit from his grandfather Carl and then homered into the Fenway Park bullpen just as the Hall of Fame outfielder so often did in his heyday, and the San Francisco Giants beat the Boston Red Sox 3–1 on Thursday.
Ryan Walker (3–2) pitched a perfect sixth inning to help the Giants avoid a series sweep and snap Boston’s four-game winning streak. Camilo Doval pitched the ninth for his sixth save.
