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subway series

n. 1 (context baseball US English) nickname for a cross-town playoff battle between the New York http://en.wikipedia.org/wiki/New%20York%20Mets and New York City http://en.wikipedia.org/wiki/New%20York%20Yankees 2 (context baseball US dated English) nickname for a crosstown baseball series playoff between two New York City baseball clubs; the Brooklyn http://en.wikipedia.org/wiki/Brooklyn%20Dodgers, New York Mets, New York Yankees.

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Subway Series

The Subway Series is a series of Major League Baseball (MLB) rivalry games played between teams based in New York City; every historic and current venue for such games has been accessible via the New York City Subway, hence the name of the series.

The term's historic usage has been in reference to World Series games played exclusively between the city's teams. The New York Yankees have appeared in all Subway Series games as they have been the only American League (AL) team based in the city, and have compiled an 11–3 all-time series record in the 14 championship Subway Series.

Since 1997, the term Subway Series has been applied to interleague play during the regular season between the Yankees and New York City's National League (NL) team: the New York Mets. The Mets and Yankees also played each other in the 2000 World Series.