As I recall, the Sox lost that series. The Mets did not "beat" the Sox. The Mets are second fiddle in New York. As such, they can be considered an opponent of the Yankees. As a New York team, they are subject to the scorn and wrath of Boston fans. They are big market and compete with the Sox for talent. Despite this, they are usually laughable. Against my better judgment, I sometimes root for their success as it flies in the face of the Yankee's efforts.