for the Atlanta Braves in 2016. The Mets suffered a historic loss on September 3, surrendering a 6-run lead in the bottom of the ninth inning against the Washington Nationals in an 11–10 loss. The Mets had a projected 99.7% chance of winning heading into the bottom of the ninth, and before the loss, MLB teams in 2019 leading by six runs of more in the ninth inning had a perfect 274–0 record, and the Mets had an 806–0 franchise record when leading by six or more in the ninth. Edwin Díaz allowed a three-run walk-off home run in the game. As of September 6, Díaz had allowed 14 ninth-inning home runs in 2019, tying Francisco Rodriguez of the Milwaukee Brewers in 2014 for the most allowed in a season in MLB history. The Mets had allowed 31 total ninth-inning home runs in 2019 as of September 6, the most by any team in league history. On September 18, with Alonso's 49th home run of the season, the team broke their single-season franchise record for home runs, surpassing the 224 hit by the 2017 team. Similar to their collapse in 2007 and collapse in 2008, the Mets lost a critical game to the Miami Marlins, then known as the Florida Marlins. As the Nationals and Brewers both won on September 23, the Mets fell behind 6–0 to the 54-101 Marlins and lost 8–4, making one Brewers win enough to eliminate them from playoff contention. Despite beating the Marlins 10–3 on September 25, the Mets were eliminated from the playoffs that day due to the Brewers beating the Reds to clinch a wild card. On September 27, Alonso hit his 52nd home run of the season off of Braves pitcher Dallas Keuchel, tying Aaron Judge's rookie record set in 2017. The next night, Alonso broke the record, hitting his 53rd home run off of Mike Foltynewicz. The Mets finished the season in 3rd place at 86–76, 11 games behind the Braves and 3 games behind the Milwaukee Brewers for the second wild card spot. The Mets went 46-26 after the All-Star Break, which was the second-best record in the National League behind only the Los Angeles Dodgers (46-24). Season standings National League East National League Division Leaders Record vs. opponents Roster Game log |-style=background:#bfb;" |1|| March 28||@ Nationals || 2–0 || deGrom (1–0) || Scherzer (0–1) || Díaz (1) || Nationals