2017 New York Mets season

The 2017 New York Mets season was the franchise's 56th season and the team's ninth season at Citi Field. The Mets opened the season on April 3 against the Atlanta Braves and finished the season on October 1 against the Philadelphia Phillies at Citizens Bank Park.

Just two years removed from a World Series appearance, the Mets had high expectations. However, the season was a major disappointment with injuries to key players, poor performances from players such as Yoenis Cespedes, Matt Harvey, and Robert Gsellman, and by controversy within the organization and around players. The Mets thus finished in the 4th place in their division, missed the playoffs for the first time since 2014, and equaled their worst record since 2009. Manager Terry Collins announced his retirement following the final game of the season.

Offseason
On November 14, 2016, second baseman Neil Walker accepted a qualifying offer, returning to the Mets for $17.2 million.

On October 29, 2016, Yoenis Cespedes re-signed with the Mets for $110 million for 4 years. This was the Mets second biggest free agent signing in their history at the time after Carlos Beltran's $119 million deal in 2005.

On January 27, 2017, Jerry Blevins re-signed with the Mets for a one-year deal with an option for 2018.

Fernando Salas re-signed with the Mets for a one-year deal.

Opening Day
The Mets began their 2017 season with a 6–0 win over the Atlanta Braves.

Batting
Players in bold are on the active MLB roster as of 2022. (Updated through 10/1/17)

Note: G = Games played; AB = At bats; R = Runs; H = Hits; 2B = Doubles; 3B = Triples; HR = Home runs; RBI = Runs batted in; BB = Walks; SO = Strikeouts; AVG = Batting average; OBP = On-base percentage; SLG = Slugging percentage; SB = Stolen bases

Pitching
(Updated thru 10/1/17)

Players in bold are on the active MLB roster as of 2022.''

Note: W = Wins; L = Losses; ERA = Earned run average; G = Games pitched; GS = Games started; SV = Saves; IP = Innings pitched; H = Hits allowed; R = Runs allowed; ER = Earned runs allowed; HR = Home runs allowed; BB = Walks allowed; K = Strikeouts