There’s a strong chance of neighborly love going out the window this fall as regional rivals work their way closer (though not geographically) toward one another in the postseason. Matchups like these are typically reserved for regular-season Interleague play — a Battle of the Beltways or a Crosstown Showdown, for example — but with the Angels and Dodgers, Nationals and Orioles and Cardinals and Royals on opposite ends of the playoff bracket, it could make for a historic World Series.