One of the most talked-about rivalries in MLB is between the New York Yankees and the Boston Red Sox. It's been a historic rivalry, with both teams often battling for supremacy in the AL East. A recent example is the intense 2021 season, where the teams met in a wild card game, with the Red Sox edging out the Yankees for a spot in the playoffs. This rivalry is fueled by passionate fan bases, historic moments, and often high-stakes games.