The Red Sox are a half game behind the Yankees in the American League East, so this concept that the Sox are dominating the Yankees might be a narrow-minded view. But for head-to-head purposes, Boston has certainly owned New York.
The Red Sox are 10-2 against the Yankees, including two sweeps at Yankee Stadium. Unfortunately, Boston has losing records against the Pirates, Padres and White Sox, among others, keeping them neck and neck with the Yankees.
For the sake of this premise, that Beantown has dominated the Bronx, why is it likely to continue?