González played an important role in the 2003 World Series against the Yankees. After going 1-for-13 in the first three games of the World Series, he hit a walk-off home run in the 12th inning of Game 4 to give the Marlins a 4–3 victory and a 2–2 tie in the Series. The extra innings happened because Florida's closer Ugueth Urbina blew a 3–1 lead in the ninth. In Game 5, González hit a two-out game-tying double and later scored, helping the Marlins take a 3-2 series lead. González added an extra run in the sixth and final game, when he slid around catcher Jorge Posada, eluding him and brushing the plate with his left hand. Florida beat the odds with a 2–0 victory and won the World Series.