By Andrew Gould The first MLB weekend of the season will see ESPN air an all-too-common Sunday Night Baseball matchup between the New York Yankees and Boston Red Sox. While fans are used to seeing those AL East rivals square off on primetime, they could choose a debuting alternative broadcast. Following the successful Monday Night Football “ManningCast” with the sibling quarterbacks, ESPN will unveil a more conversational baseball telecast hosted by former Yankees great Alex Rodriguez and Yankees broadcaster Michael Kay. Unsurprisingly, the duo will start by welcoming a former Yankees player t…