2015 Houston Astros season

The 2015 Houston Astros season was the 54th season for the Major League Baseball (MLB) franchise located in Houston, Texas, their 51st as the Astros, third in both the American League (AL) and AL West division, and 16th season at Minute Maid Park. They entered the season having finished in fourth place in the AL West with a 70–92 record, breaking a string of three consecutive seasons with at least 106 losses, and most successful season to date since joining the American League.

The 2015 season was the first for A. J. Hinch as manager, the 23rd in Astros' franchise history, succeeding Tom Lawless.

In the first round of the June MLB draft, the Astros selected third baseman Alex Bregman at number 2 overall and outfielder Kyle Tucker at number 5. The same day, the Astros promoted 2012 number one overall selection Carlos Correa the major leagues, and he achieved a number of rare feats related to brevity of career span that led to selection as June AL Rookie of the Month.

The Astros sent Dallas Keuchel and Jose Altuve to the AL All-Star squad. Keuchel was named starting pitcher for the AL, while Altuve was voted as starting second baseman. Craig Biggio was inducted into the National Baseball Hall of Fame and Museum on July 29, making him the first player to be inducted as a Houston Astro, along with one-time teammate Randy Johnson, who was instrumental in the Astros' 1998 National League West division title run.

In July, Scott Kazmir's 0.26 earned run average (ERA) ranked as the third-lowest in MLB history for that month. On August 21, Mike Fiers tossed a no-hitter versus the Los Angeles Dodgers, the 11th in club history, and first-ever accomplished at Minute Maid Park.

With an 86–76 record—their first winning season since 2008—and second-place finish in the AL West, the Astros made the playoffs for the first time since their World Series appearance in 2005, and first as members of the American League. It was the tenth postseason and third wild card qualification overall in franchise history. Houston defeated the New York Yankees in the AL Wild Card (ALWC) Game before taking the eventual World Series champion Kansas City Royals to five games in the American League Division Series (ALDS), nearly pulling off a major upset. During their postseeason run, Colby Rasmus led the Astros in batting (.412), home runs (4), runs batted in (RBI, 6), and on-base percentage (.583).

Four of the 2015 AL Pitcher of the Month Awards were claimed by Astros—including three by Keuchel, who was the AL Cy Young Award winner—and another by Kazmir. Keuchel led the AL games won (20–8), innings (232), and walks plus hits per inning (1.017, WHIP), and finished second in earned run average (2.48 ERA). Keuchel and Altuve were named AL Gold Glove Award winners. Altuve, the AL hits (200) and stolen bases (38) leader each for a second consecutive season, ranked third in batting (.313) to claim a Silver Slugger Award. Correa, who led AL shortstops in home runs (22) and hit .279 over 99 games, was named AL Rookie of the Year.