[4] On Monday, September 29, one day after the conclusion of the 2014 season, a $575 million four-year renovation project to Wrigley Field began.

[13] The Cubs finalized a new television broadcast agreement with long-time over-the-air carrier WGN-TV (Channel 9), in which the station would carry a reduced slate of 45 games per season.

The team also signed a new broadcast agreement with ABC-owned station WLS-TV (Channel 7), in which they will show 25 games annually;[14] this deal replaced WCIU-TV as the Cubs' secondary over-the-air television outlet.

[15] As a result of a new programming strategy implemented by Tribune Media for WGN America, the cable superstation ceased televising Cubs games (as well as that of the Chicago White Sox and Bulls) to a national audience as of January 2015.

The Cubs were paced offensively by Dexter Fowler and Kyle Schwarber, who combined for five hits in seven at bats, each with a home run.

Cubs starter Kyle Hendricks pitched well, but allowed a home run to the leadoff batter, third baseman Matt Carpenter in the first, and back-to-back solo shots to Kolten Wong and Randal Grichuk in the fifth inning which led to his exit.

[52] The Cubs got 13 hits to support Jake Arrieta who struck out nine Cardinals over 5-2/3 innings while giving up four runs, the most he had allowed since June 16.

Four rookies started for the Cubs and three of them helped to set a Major League playoff team record with six home runs in an 8–6 victory.

Eight Chicago Cub pitchers allowed eight hits and combined for 15 strikeouts to defeat the St. Louis Cardinals and win a postseason series for the first time ever at Wrigley Field.

In the bottom of the second inning, starting pitcher Jason Hammel drove in Starlin Castro with a sharp single to center and Addison Russell's replacement at shortstop, Javier Báez, followed with a three-run homer to right off Cardinals starter, John Lackey.

[55] Anthony Rizzo hit a go-ahead solo homer off Cardinal reliever Kevin Siegrist in the bottom of the inning on a two out, 0-2 pitch.

[58] For the third game in the series, the Mets scored in the first with a double by Yoenis Céspedes that drove in David Wright off of Cubs starter, Kyle Hendricks.

The bottom fell out for the Cubs in the sixth when a wild pitch by Trevor Cahill (the losing pitcher) on strike three allowed Yoenis Céspedes to score, putting the Mets up 3–2.

A Céspedes single and a sacrifice grounder by Lucas Duda in the seventh drove in Wright and Murphy, for a final score of 5–2 and series deficit of 3–0 for the Cubs.

In the second inning, Cubs relief pitcher Travis Wood allowed a two-run double to Duda making it a 6–0 game.

Mets third baseman David Wright made a leaping grab of Castro's line drive to prevent an extra base hit and two runs.

In the fifth inning, after outfielders Dexter Fowler and Jorge Soler reached base, Mets reliever Bartolo Colón struck out third baseman Kris Bryant and the Cubs again stranded two baserunners.

When closer Jeurys Familia struck out Fowler in the ninth, the Mets were back in the World Series for the first time since 2000.