A new team in town, new stadiums built, Subway Series established Dodgers–Yankees rivalry

at dawn of 20th century, american league in infancy, , 1 of charter franchises (which become yankees) original baltimore orioles. league, however, recognized required presence in new york city, country s largest market, in order survive. hence, moved orioles new york, home of 2 national league franchises, brooklyn dodgers , new york giants. new team called new york highlanders due home field being hilltop park 1903–1912.

after highlanders allowed giants play @ hilltop park when latter s home stadium, polo grounds, undergoing reconstruction fire, giants invited highlanders share polo grounds them. since highlanders no longer playing @ higher elevations, changed name new york yankees. dodgers opened new field, ebbets field, in brooklyn. opening game @ stadium exhibition game against highlanders on april 5, 1913 future yankee manager casey stengel had game-winning hit dodgers. highlanders officially called yankees later year.

in 1920, giants notified yankees have find new stadium of own 1921 season. giants rescinded eviction notice , allowed yankees stay until end of 1922 season, when giants renovated polo grounds , increased seating capacity 38,000 50,000. before however, 1921 world series between giants , yankees became first subway series, match-ups between dodgers , giants not referred subway series. after losing giants in world series , again following year, yankees moved across harlem river original yankee stadium in bronx, captured first ever world series giants in 1923.