The 2009 American League Championship Series (ALCS), the second round of the 2009 American League playoffs, was a best-of-seven game series matching the two winners of the 2009 American League Division Series. The AL East Division champions, the New York Yankees, defeated the AL West Division champions, the Los Angeles Angels of Anaheim, four games to two, to advance to the 2009 World Series, their first since 2003. This was the third time that these two teams faced each other in the playoffs. They met in the 2002 ALDS and 2005 ALDS with the Angels winning both series by 3–1 and 3–2.

The Yankees held home-field advantage because they had a better regular-season record than Los Angeles Angels. The series, the 39th in league history, began on October 16 and ended on October 25. Fox Sports carried all games with Joe Buck and Tim McCarver in the broadcast booth. Starting with the 2009 season, weeknight games began 40 minutes earlier as suggested by Commissioner Bud Selig.

2009 American League Championship Series

The Yankees won the series four games to two, and went on to defeat the Philadelphia Phillies 4–2 in the World Series.

2009 American League Championship Series

Summary

New York Yankees vs. Los Angeles Angels of Anaheim

† Game 6 was originally scheduled to be played on Saturday, October 24, but was postponed because of rain.

2009 American League Championship Series

Game summaries

Game 1

On a blustery night where the official game time temperature was , starter CC Sabathia limited the Angels to one run on four hits and a walk in eight innings, striking out seven in a 4–1 Yankee win.

The Yankees staked Sabathia to a 2–0 lead in the bottom of the first on an Alex Rodriguez sacrifice fly and an unusual RBI infield single from Hideki Matsui. Matsui hit a short popup to the left side of the infield, but there was a miscommunication between third baseman Chone Figgins and shortstop Erick Aybar and the ball fell in for a single, enabling Johnny Damon to score from second. Vladimir Guerrero set up the Angels' only run in the top of the fourth, hitting a high fly ball to deep left field that looked to be a home run but bounced in front of the fence for a double instead, possibly due to the windy conditions. Guerrero scored two batters later on Kendrys Morales' single. The Yankees added a run in the fifth on Matsui's second run-scoring single of the night, and a pair of Angels errors led to New York's fourth run in the sixth. After reaching base on a walk, Melky Cabrera advanced to second on John Lackey's errant pickoff attempt. Derek Jeter then singled up the middle, but Torii Hunter overran the ball, allowing Cabrera to score without a play at the plate.

Mariano Rivera pitched the ninth, recording his 36th career postseason save.

Game 2

Once again, the Yankees struck first in the second inning. After Nick Swisher worked a two-out walk—his first in this postseason—Robinson Canó hit his first career postseason triple to deep right-center field to score Swisher. In the bottom of the third, Derek Jeter hit a solo home run to right field to give the Yankees a 2–0 advantage. The Angels fought back in the fifth. After Maicer Izturis hit a leadoff ground rule double to right field, Erick Aybar's one-out single brought Izturis home to cut the lead in half. Later in the inning, New York starter A. J. Burnett's bases-loaded wild pitch caused the game to be tied at two. Both teams threatened multiple times in the ensuing innings, but neither scored and the game was sent to extra innings. In the top half of the 11th, Gary Matthews Jr. drew a walk off Yankees reliever Alfredo Aceves, advanced to second on a sacrifice bunt by Erick Aybar, and scored on an RBI single by Chone Figgins. At this point, the weather took a turn for the worse, which included rain and snow falling, but the Yankees battled back. In the bottom half of the frame, Alex Rodriguez tied the game with a leadoff home run off Angels closer Brian Fuentes. Then, in the 13th inning, Melky Cabrera managed to reach on an error committed by Izturis, consequently driving in the winning run. Izturis had the option of throwing to first for the second out, but instead attempted a tough throw to get the force at second for a potential double play, completely missing shortstop Aybar. Figgins, who was backing up the play, came up with the ball in an attempt to get the play at the plate but it slipped out of his hand. Jerry Hairston Jr., who had reached on a single to start the inning, came around to score on that error.

Alex Rodriguez's 11th-inning home run was his second late-inning game-tying home run in this postseason. Both were off the opposing team's closer (the Minnesota Twins' Joe Nathan, in ALDS Game 2).