The Red Sox-Yankees rivalry was odd. They had almost no playoff history together. Just the history of Babe Ruth and decades of Boston looking up at the Yankees in the standings. But in the early part of this century, with the emergence of the Wild Card and realignment, the two teams started playing each other all the time ... even in the playoffs. Through the experiences of two SuperFans, this is a deep dive into how the modern-day rivalry became the best in all of sports.