How the Yankees-Red Sox Rivalry Shaped the Birth of the First Subway Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email New York Yankees and Mets fans exit the number 4 subway train October 21, 2000 at Yankee Stadium in the Bronx in New York City. ( Spencer Platt / Getty ) Produced by Abbie Ruzicka and Mythili Rao Produced by PRI and WNYC