The New York Mets, one of Major League Baseball's first expansion teams, were founded in 1962 in the New York City borough of Queens. Created to replace the departed Brooklyn Dodgers and New York Giants, the team symbolically adopted the blue of the Dodgers and the orange of the Giants, and initially played at the Polo Grounds before moving to Shea Stadium (1964-2008) and then Citi Field (since 2009). After a famously poor inaugural season, the Mets dramatically turned their fortunes, becoming the "Miracle Mets" and winning their first World Series in 1969 in a major upset, a victory aided by future Hall of Famer Tom Seaver.

They secured a second World Series title in 1986, alongside five National League pennants and six division titles, accumulating eleven postseason appearances. Since 2020, the team has been owned by billionaire Steve Cohen, and as of 2025, the Mets are valued at $3.2 billion, ranking among MLB's most valuable franchises.