The Mets got off to a red hot start in his first season with the club, jumping out to an 11-1 record, but then went on to go 5-21 in the month of June to fall out of the National League Postseason race. They ended last season at 77-85, 13 games back in the NL East Division standings. Callaway was hired in October of 2017, and got the big acquisitions of Robinson Cano, Yoenis Cespedes, and Edwin Diaz, all of whom have been hampered with injuries since joining the club.
Callaway was thought to be on his way out in June when he, along with Jason Vargas, both snapped at a reporter, and reportedly had to be restrained from them after a loss during their tough stretch. Callaway did go on to apologize, while Vargas did not even finish the season with the team, as he was traded away to the Philadelphia Phillies.
The Mets got hot after that incident, winning 15 of their next 16 games, headlined by rookie slugger Pete Alonso, who broke Aaron Judge's rookie record of 52 home runs this season. They quickly improved their record from 46-55 to 61-56 in the middle of the summer, keeping them in the Wild Card hunt up until the final week of the regular season. The nine-game improvement from his first season was not enough to keep Callaway with the team, as the Mets are already the seventh team that will be looking for a new manager heading in to 2020.