Game 1

In a pitcher's duel, Dallas Keuchel and Masahiro Tanaka allowed no runs through the first three innings before the Astros scored in the bottom of the fourth. José Altuve hit an infield single and stole second base, before Carlos Correa drove him in with an RBI single. Yuli Gurriel drove in Correa to give the Astros a 2–0 lead. Keuchel recorded ten strikeouts, allowing four hits and no runs in seven innings. Tanaka pitched six innings with three strikeouts and allowed two earned runs. Chad Green relieved Tanaka and threw two scoreless innings. Ken Giles was brought in with one out in the eighth for a five-out save. He struck out four of six but allowed a home run to Greg Bird before striking out Jacoby Ellsbury swinging to end the game. It was his second save of this postseason.^[14]

Game 2

Justin Verlander threw a complete game, allowing one run and five hits while striking out 13. Carlos Correa opened the scoring in the fourth inning with a home run off of starter Luis Severino that barely scraped over the right field wall. It was reviewed for fan interference, as a child reached his glove over the wall in an attempt to catch it.^[15] Todd Frazier answered for the Yankees in the fifth with an RBI ground-rule double that was lodged in the center-field fence after a two-out double by Aaron Hicks.^[15] In the bottom of the ninth, José Altuve singled with one out off of Aroldis Chapman. Correa hit a walk-off double to right field, as Gary Sanchez did not field the ball cleanly at home plate and Altuve scored the winning run, giving the Astros a 2–0 series lead heading to New York.^[16]

Game 3

In the bottom of the second inning, Todd Frazier opened the scoring with a three-run home run after two two-out singles off of Charlie Morton. The Yankees piled on five more runs in the fourth inning. After a leadoff ground-rule double and two-out walk, Chase Headley's RBI single made it 4–0 Yankees. A hit-by-pitch to Brett Gardner loaded the bases before Morton was relieved by Will Harris, who threw a wild pitch to let Frazier score before a three-run home run by Aaron Judge made it 8–0.^[17] CC Sabathia did not allow a run in six innings pitched, striking out five. In the top of the ninth inning, Dellin Betances entered in relief only to walk the first two batters before getting pulled for Tommy Kahnle. A single by Cameron Maybin loaded the bases, then one out later, walk to Alex Bregman forced in a run, but José Altuve hit into the game-ending double play as the Yankees' won Game 3 8–1.^[18]

Game 4

Game 4 began as a pitcher's duel. The Yankees' Sonny Gray threw five scoreless innings, allowing only one hit while Astros' Lance McCullers Jr. threw six shutout innings with one hit. With the bases loaded in the top of the sixth on two walks and a catcher's interference call, Yuli Gurriel cleared them with a double off of David Robertson to put the Astros up 3–0. The next inning, a Starlin Castro fielding error allowed Marwin González, who doubled, to score, increasing the lead to 4–0. In the bottom of the seventh, Aaron Judge hit a home run, chasing McCullers from the game. Chris Devenski entered in relief only to allow a triple to Didi Gregorius and a sacrifice fly to Gary Sánchez, cutting the lead to 4–2. In the bottom of the eighth, Todd Frazier and Chase Headley both singled, with the latter tripping on his way to second base and evading José Altuve's close tag to remain safe at second. As Ken Giles entered the game, a Brett Gardner groundout made the score 4–3 before Judge doubled into left field, tying the game at 4–4. Gregorius singled and Sánchez doubled in two runs to complete the Yankees comeback, now up 6–4. Aroldis Chapman entered in the top of the ninth inning, pitching a 1-2-3 inning to get his first save of the series and third this postseason as the Yankees rallied to tie the series at two games all.^[19]

Game 5

In the top of the second inning, Yuli Gurriel hit a leadoff double, but was stranded with three consecutive groundouts. In the bottom half of that inning, Starlin Castro hit a two-out double and was driven in by Greg Bird's single. Next inning Chase Headley hit a leadoff single and scored on Aaron Judge's one-out double. In the fifth, after a single and walk, back-to-back two-out RBI singles by Gary Sanchez and Didi Gregorius made it 4–0 and knock starter Dallas Keuchel out of the game. Gary Sánchez provided insurance with a home run in the bottom of the seventh inning off of Brad Peacock. Masahiro Tanaka pitched seven shutout innings and Tommy Kahnle pitched two innings to close. The Yankees were now one win away from the World Series.^[20]

Game 6

Facing elimination, Justin Verlander threw seven shutout innings for the Astros, striking out eight. The Astros struck first in the bottom of the fifth off of Luis Severino. After two walks, Brian McCann drove in the first run with a double, then another walk loaded the bases before José Altuve's two-run single put Houston on the board 3–0. In the top of the eighth, Aaron Judge hit a home run to cut the lead to 3–1, but the Astros increased their lead in the bottom of the inning, starting with an Altuve lead off home run off of David Robertson. The solo HR by Judge was the final run the Yankees scored in the series. After a double and single, Alex Bregman's two-run double made it 6–1. One out later Evan Gattis's sacrifice fly off of Dellin Betances made it 7–1 Astros. Ken Giles pitched a scoreless ninth as the Astros forced the first LCS Game 7 in either league since 2012. This was Houston's third ever win in a game facing elimination in a postseason series and the first since the 2015 American League Wild Card Game.^[21]

Game 7

In the winner-take-all game to decide the AL pennant winner, Aaron Judge made a leaping catch to rob Yuli Gurriel of a solo homer in the bottom of the second inning. CC Sabathia allowed the first run of the game on a home run to Evan Gattis in the fourth, In the next inning, Tommy Kahnle entered the game in relief for the Yankees, but gave up a home run to José Altuve to make the lead 2–0. Two singles later, former Yankee Brian McCann lined a double to extend the Astros lead to four. For the Astros, Charlie Morton pitched five innings, allowed one walk and struck out five. Lance McCullers Jr. entered in relief, pitching four scoreless innings to close out the game and earn his first career save. McCullers ended the game throwing 24 straight curveballs; a Greg Bird flyout to George Springer was the final out of the game, sending the Astros to the 2017 World Series.^[22]

The Astros advanced to their first World Series in 12 years, becoming the first team to win pennants in both leagues. Houston's victory made this just the fifth best-of-seven series (following the 1987, 1991, and 2001 World Series, and the 2004 National League Championship Series which the Astros played in), and the first ALCS, in which the home team won all seven games.^[23]

Composite line score

2017 ALCS (4–3): Houston Astros beat New York Yankees.