2003 American League Championship Series
| 2003 American League Championship Series | ||||||||||
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| Dates | October 8–16 | |||||||||
| MVP | Mariano Rivera (New York) | |||||||||
| Umpires | Tim McClelland Terry Craft Alfonso Márquez Derryl Cousins Joe West Ángel Hernández | |||||||||
| Broadcast | ||||||||||
| Television | Fox (United States) MLB International (International) | |||||||||
| TV announcers | Joe Buck, Tim McCarver, Bret Boone and Chris Myers (Fox) Gary Thorne and Rick Sutcliffe (MLB International) | |||||||||
| Radio | ESPN | |||||||||
| Radio announcers | Jon Miller and Joe Morgan | |||||||||
| ALDS |
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The 2003 American League Championship Series (ALCS) was a semifinal series in Major League Baseball's 2003 postseason played between the Wild Card Boston Red Sox and the top-seeded New York Yankees from October 8 to 16, 2003. It was the second postseason meeting of the Yankees-Red Sox rivalry. The Yankees won the series four games to three to advance to the World Series, where they lost in six games to the National League champion Florida Marlins.
This was the last time the Yankees defeated the Red Sox in the postseason until 2025, and remains the last time that the Yankees won a Game 7.