2003 American League Division Series
The 2003 American League Division Series (ALDS), the opening round of the 2003 American League playoffs, began on Tuesday, September 30, and ended on Monday, October 6, with the champions of the three AL divisions—along with a "wild card" team—participating in two best-of-five series. The teams were:
- (1) New York Yankees (Eastern Division champion, 101–61) vs. (3) Minnesota Twins (Central Division champion, 90–72): Yankees win series, 3–1.
- (2) Oakland Athletics (Western Division champion, 96–66) vs. (4) Boston Red Sox (Wild Card, 95–67): Red Sox win series, 3–2.
The higher seed (in parentheses) had the home field advantage (Games 1, 2 and 5 at home), which was determined by playing record. Although the team with the best record was normally intended to play the wild card team, the Yankees played the Twins, rather than the wild card Red Sox, because the Yankees and Red Sox are in the same division.
New York Yankees vs. Minnesota Twins 
New York won the series, 3–1.
|1||September 30||Minnesota Twins – 3, New York Yankees – 1||Yankee Stadium (I)||3:18||56,292|
|2||October 2||Minnesota Twins – 1, New York Yankees – 4||Yankee Stadium (I)||3:07||56,479|
|3||October 4||New York Yankees – 3, Minnesota Twins – 1||Hubert H. Humphrey Metrodome||3:02||55,915|
|4||October 5||New York Yankees – 8, Minnesota Twins – 1||Hubert H. Humphrey Metrodome||2:49||55,875|
Oakland Athletics vs. Boston Red Sox 
Boston won the series, 3–2.
|1||October 1||Boston Red Sox – 4, Oakland Athletics – 5 (12 innings)||Network Associates Coliseum||4:37||50,606|
|2||October 2||Boston Red Sox – 1, Oakland Athletics – 5||Network Associates Coliseum||2:37||36,305|
|3||October 4||Oakland Athletics – 1, Boston Red Sox – 3 (11 innings)||Fenway Park||3:42||35,460|
|4||October 5||Oakland Athletics – 4, Boston Red Sox – 5||Fenway Park||3:02||35,048|
|5||October 6||Boston Red Sox – 4, Oakland Athletics – 3||Network Associates Coliseum||3:05||49,397|
New York vs. Minnesota 
Game 1, September 30 
|WP: LaTroy Hawkins (1–0) LP: Mike Mussina (0–1) Sv: Eddie Guardado (1)|
Game 2, October 2 
|WP: Andy Pettitte (1–0) LP: Brad Radke (0–1) Sv: Mariano Rivera (1)
MIN: Torii Hunter (1)
Game 3, October 4 
|WP: Roger Clemens (1–0) LP: Kyle Lohse (0–1) Sv: Mariano Rivera (2)
NYY: Hideki Matsui (1)
MIN: A.J. Pierzynski (1)
Game 4, October 5 
|WP: David Wells (1–0) LP: Johan Santana (0–1)
NYY: Derek Jeter (1)
New York's victory secured their place in the American League Championship Series.
Composite box 
|New York Yankees||1||2||1||6||0||0||3||1||2||16||38||3|
|Total attendance: 224,561 Average attendance: 56,140|
Oakland vs. Boston 
Game 1, October 1 
|WP: Rich Harden (1–0) LP: Derek Lowe (0–1)
BOS: Todd Walker 2 (2), Jason Varitek (1)
After the Athletics tied the game 4–4 in the ninth inning on an RBI single by Erubiel Durazo, they won it in the twelfth when catcher Ramón Hernández laid down a two-out bunt single, scoring Eric Chavez from third base. Rich Harden was credited with the win, and Derek Lowe was credited with the loss. This was Oakland's ninth consecutive playoff win over Boston in the wake of ALCS sweeps in 1988 and 1990, breaking the record for consecutive playoff wins against one team set by the New York Yankees against the Chicago Cubs with World Series sweeps in 1932 and 1938. Incidentally, the Yankees nearly got a chance to extend that streak the same year.
Game 2, October 2 
|WP: Barry Zito (1–0) LP: Tim Wakefield (0–1)|
A five-run outburst in the second inning, capped off by a two-run throwing error by Todd Walker, was all the offense Oakland pitcher Barry Zito needed to claim the victory for the A's. Tim Wakefield was credited with the loss.
Game 3, October 4 
|WP: Scott Williamson (1–0) LP: Rich Harden (1–1)
BOS: Trot Nixon (1)
Down 1–0 in the sixth inning, the Athletics had a potential rally stifled by controversial outs. Eric Byrnes was tagged out after failing to touch home plate after a collision with catcher Jason Varitek. Miguel Tejada was similarly retired after being obstructed by Bill Mueller while rounding third base. Tejada put his hands up to draw attention to it, but the umpires failed to make the call. The one run scored in the inning sent the game into extra innings, where Boston won on a two-run walk-off home run by Trot Nixon. Scott Williamson was credited with the win, and Rich Harden was credited with the loss. This loss ended Oakland's playoff-record winning streak against the Red Sox at ten games, a record the Red Sox themselves would break in 2008 when they won their eleventh consecutive playoff game against the Angels.
Game 4, October 5 
|WP: Scott Williamson (2–0) LP: Keith Foulke (0–1)
OAK: Jermaine Dye (1)
BOS: Johnny Damon (1), Todd Walker (3)
After Oakland starter Tim Hudson left with a strained left oblique after only one inning, the A's bullpen held the Sox to only three runs over the next seven innings. With a 4–3 lead in the eighth inning, however, closer Keith Foulke gave up a game-winning two-RBI double to David Ortiz, scoring Nomar Garciaparra and Manny Ramírez. Scott Williamson was credited with the win.
Game 5, October 6 
|WP: Pedro Martínez (1–0) LP: Barry Zito (1–1) Sv: Derek Lowe (1)
BOS: Jason Varitek (2), Manny Ramírez (1)
The Red Sox rode a four-run sixth inning, highlighted by a three-run Manny Ramírez home run to complete their comeback from an 0–2 series deficit. Down by one run, the A's loaded the bases in the ninth inning, but failed to score as temporary closer Derek Lowe struck out Terrence Long looking. The win was marred by a violent collision between outfielder Johnny Damon and second baseman Damian Jackson. Damon was sent to the hospital where he was diagnosed with a concussion. Both starters factored into the decision, as Pedro Martínez was credited with the win, and Barry Zito was credited with the loss.
Boston's victory secured their place in the American League Championship Series while Oakland lost the ALDS after being up two games to none for the second time in three years.
Composite box 
|Boston Red Sox||1||1||3||0||1||5||2||2||0||0||2||0||17||38||5|
|Total attendance: 206,816 Average attendance: 41,363|
- "2003 ALDS - Minnesota Twins vs. New York Yankees - Game 1". Retrosheet. Retrieved 2009-09-13.
- "2003 ALDS - Minnesota Twins vs. New York Yankees - Game 2". Retrosheet. Retrieved 2009-09-13.
- "2003 ALDS - New York Yankees vs. Minnesota Twins - Game 3". Retrosheet. Retrieved 2009-09-13.
- "2003 ALDS - New York Yankees vs. Minnesota Twins - Game 4". Retrosheet. Retrieved 2009-09-13.
- "2003 ALDS - Boston Red Sox vs. Oakland Athletics - Game 1". Retrosheet. Retrieved 2009-09-13.
- "2003 ALDS - Boston Red Sox vs. Oakland Athletics - Game 2". Retrosheet. Retrieved 2009-09-13.
- "2003 ALDS - Oakland Athletics vs. Boston Red Sox - Game 3". Retrosheet. Retrieved 2009-09-13.
- "2003 ALDS - Oakland Athletics vs. Boston Red Sox - Game 4". Retrosheet. Retrieved 2009-09-13.
- "2003 ALDS - Boston Red Sox vs. Oakland Athletics - Game 5". Retrosheet. Retrieved 2009-09-13.