After a dismal 22–33 start to the season following a 10–3 loss to the Los Angeles Dodgers on May 29, the team held a critical meeting, led by shortstop Francisco Lindor.

On September 30, the Mets clinched a postseason berth for the second time in the past three seasons with an 8–7 win against the Atlanta Braves during the first game of a doubleheader.

[3] One of the more memorable moments of the season occurred on June 12, when the McDonald's mascot Grimace threw out the ceremonial first pitch before a game against the Miami Marlins.

[4] The team then embarked on a seven-game win streak, a run that fans humorously credited to Grimace's good luck.

[9] However, the Mets were defeated in six games by the eventual World Series champion Los Angeles Dodgers in the NLCS, ending their historical and magical playoff run.

[13] On October 5, GM Billy Eppler stepped down amid an investigation by MLB into him and the Mets for improperly using the injured list during the 2023 season.

[34] At the end of April into the beginning of May, the Mets split the next series against the Chicago Cubs, including coming back from a 4–0 deficit on May 2, to remain above .500 with a 16-15 record.

[38][39] By May 29, following getting swept by the Los Angeles Dodgers, the Mets fell to 22–33, and a players-only meeting was held for forty minutes led by Francisco Lindor.

[55][56] Following the All-Star break, the Mets improved to a 55–48 record thanks to a series split with the Marlins, another sweep of the Yankees and winning the first two games against the Atlanta Braves, briefly surpassing them in the standings and taking the top wild card spot in the National League.

[64] Back on their August 17 win against the Marlins, pitcher Luis Severino threw a complete game shutout, the first for the Mets since April 2021.

[66] The bullpen collapsed again on August 28 against the Arizona Diamondbacks in an 8–5 loss, and the Mets fell to 4 games back of the Braves in the National League Wild Card.

With that win streak, they would ultimately end up back in playoff position by tying the Braves for the final NL Wild Card spot.

[70] Despite the Mets' loss to the Reds, they continued to keep their playoff hopes alive and play good baseball, by taking two of three against the Toronto Blue Jays.

[75] After completing a 3-game sweep of the Nationals, the Mets then proceeded to start another series with the Phillies, ultimately scoring ten or more runs across three games for the first time in franchise history.

[96] The winner-take-all Game 3 was a scoreless affair until the bottom of the seventh inning, when pinch hitter Jake Bauers hit a solo home run off José Buttó to give the Brewers a 1–0 lead.

In the top of the ninth, Pete Alonso launched a three-run home run off closer Devin Williams, scoring Francisco Lindor and Brandon Nimmo to give the Mets a 3–2 lead.

In the bottom of the ninth, David Peterson closed out the game and series by inducing a series-ending double play ball off the bat of Brice Turang to send the Mets to their first NLDS since 2015.

Alonso became the first player in MLB history to hit a go-ahead home run while the team was trailing in the ninth inning or later in a winner-take-all playoff game.

[97] In the first game of the series, the Mets trailed 1–0 heading into the 8th inning against the Phillies due to a Kyle Schwarber leadoff home run.

In the bottom of the ninth, Castellanos hit a walk-off RBI single to score Turner for the Phillies to take Game 2 and even the series at 1–1.

[102] In Game 2 on the following day, the Mets quickly jumped out to a 6–0 lead after a leadoff home run from Francisco Lindor and a 2nd inning grand slam by Mark Vientos.