The Mets–Yankees rivalry, often dubbed the Subway Series, pits New York City's two Major League Baseball teams—the National League's Mets and the American League's Yankees—against each other. Although the teams only met in exhibition games like the Mayor's Trophy (1963–1983) before, official regular-season competition began in 1997 with the advent of interleague play, and they have faced off every season since. The rivalry's roots trace back to the 1958 departure of the Brooklyn Dodgers and New York Giants, which led to the Mets' founding in 1962 to fill the National League void, adopting the Giants' orange and Dodger blue in their colors. The two clubs have qualified for the postseason in the same year six times (1999, 2000, 2006, 2015, 2022, and 2024), most famously clashing in the 2000 World Series, which the Yankees won. Their regular-season schedule has varied over time—from six games a year to four—but analysts frequently cite this crosstown matchup as the best justification for interleague play, given its deep history and intense fan passion.