The Mets–Yankees rivalry refers to the latest incarnation of the Subway Series, which is the interleague rivalry between New York City's Major League Baseball (MLB) teams: the New York Mets and the New York Yankees. The Mets are a member club of MLB's National League (NL) East division, and the Yankees are a member club of MLB's American League (AL) East division. Until interleague play started, the two teams had only met in exhibition games. Since the inception of interleague play, the two teams have played each other in every regular season since 1997. From 1999 through 2012, they have played six games per season: two three-game series (one series in each team's ballpark). In 2013, the two teams met four times: a pair of two-game series. Both clubs have qualified for the postseason in the same season on five occasions: 1999, 2000, 2006, 2015, and 2022 and faced off in the 2000 World Series. Analysts of the game have commented that the rivalry is the best reason for interleague play. (en)