The 2017 American League Division Series (branded as the 2017 American League Division Series presented by Doosan for sponsorship purposes) is the 24th American League Division Series. Two best-of-five-game series will be held to determine the participating teams in the 2017 American League Championship Series. The three divisional winners (seeded 1-3) and a fourth team—the winner of a one-game Wild Card playoff— will play in two series.

These matchups are:

The higher seeded team in each series will host Games 1, 2, and 5 (if necessary), and the lower seeded team will host Games 3 and 4 (if necessary)

For the first time, Major League Baseball sold presenting sponsorships to all of its postseason series; Doosan acquired presenting sponsorship to the ALDS.

Series tied, 2–2.

Houston won the series, 3–1.

This is the fourth postseason meeting between the Indians and Yankees, with Cleveland winning two of the three series including both times in the ALDS (1997 ALDS and the 2007 ALDS). The Yankees won the 1998 ALCS. Their most recent meeting was in the 2007 American League Division Series in which the Indians eliminated the Yankees in four games (3–1).

2017 ALDS (2–2): Cleveland Indians tied New York Yankees

This was the first postseason meeting between the Red Sox and Astros. This was the first postseason series victory for the Astros since the 2005 National League Championship Series.

Trying to force a return to Houston for Game 5, the Red Sox sent 2016 AL Cy Young Award winner Rick Porcello to the mound to try and stifle the Astros offense while Charlie Morton was tasked with helping the Astros advance. The Astros struck first when George Springer scored on José Altuve's double play in the first. The Red Sox promptly responded with Xander Bogaerts' solo home run in the bottom of the frame. Springer reclaimed the lead for the Astros with an RBI single in the top of the second while Morton was able to escape a bases-loaded, no-out jam in the bottom of the inning. Chris Sale was brought in for relief in the fourth and tossed four scoreless innings. In response, the Astros brought in Justin Verlander in the fifth to shut down the Sox, but not before Andrew Benintendi launched a 2-run homer to grab a 3–2 lead. That would be the only runs Verlander gave up as he pitched 2 ¹⁄₃ innings. Alex Bregman rocked a game-tying solo shot in the top of the eighth off of Sale (his second of the series), ending his day. Craig Kimbrel was brought in and gave up a hit and a walk before Josh Reddick gave the Astros the lead on a two out RBI single to make it 4–3. Carlos Beltrán added an RBI double in the top of the ninth for an insurance run, one that would become vital. Ken Giles who pitched a shut-out eighth inning before giving up an inside-the-park-homerun to Rafael Devers in the bottom of the ninth. He then retired the side to send the Astros to their first American League Championship Series and their first postseason series win since 2005. The Red Sox were knocked out of the playoffs in the first round for the second year in a row, having been swept by the Cleveland Indians in the 2016 American League Division Series.

...
Wikipedia