2015 Colorado Rockies season

The 2015 Colorado Rockies season was the franchise's 23rd in Major League Baseball. Walt Weiss returned for his third consecutive season as manager. It was the 21st season the Rockies played their home games at Coors Field.

Offseason

 * November 24, 2014: Juan Nicasio was traded by the Colorado Rockies to the Los Angeles Dodgers. The Los Angeles Dodgers sent Noel Cuevas (December 16, 2014) to the Colorado Rockies to complete the trade.
 * December 11, 2014: Josh Rutledge was traded by the Colorado Rockies to the Los Angeles Angels of Anaheim for Jairo Diaz.
 * December 16, 2014: Daniel Descalso was signed as a free agent by the Colorado Rockies.
 * January 5, 2015: Nick Hundley was signed as a free agent by the Colorado Rockies.
 * January 30, 2015: David Hale was traded by the Atlanta Braves with Gus Schlosser to the Colorado Rockies for José Briceño and Chris O'Dowd (minors).
 * February 4, 2015: Kyle Kendrick was signed as a free agent by the Colorado Rockies.
 * March 22, 2015: Jhoulys Chacín was released by the Colorado Rockies.

Regular season
The Rockies played eight extra-inning games during the season, the fewest of any MLB team in 2015.

Transactions

 * July 28, 2015: Troy Tulowitzki was traded with LaTroy Hawkins to the Toronto Blue Jays for José Reyes, Miguel Castro, Jeff Hoffman, and Jesús Tinoco.
 * August 20, 2015: Drew Stubbs was released by the Colorado Rockies.
 * August 27, 2015: Rafael Betancourt was released by the Colorado Rockies.

Major League Debuts

 * Batters
 * Dustin Garneau (Aug 20)
 * Tom Murphy (Sep 12)
 * Pitchers
 * Scott Oberg (Apr 14)
 * Ken Roberts (May 3)
 * Jon Gray (Aug 4)
 * Jason Gurka (Aug 29)

Starters by position
''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters
''Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Starting pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts Note: There is no ERA leader (qualifier) for team because no pitcher pitched 1 inning per scheduled game (162 innings).

Other pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers
Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts

Awards and accomplishments

 * MLB Franchise Four selections for Colorado Rockies:
 * Andrés Galarraga (1B)
 * Todd Helton (1B)
 * Troy Tulowitzki (SS)
 * Larry Walker (RF)