The New York Mets’ failure to make the playoffs in 2019 falls primarily on the bullpen and manager Mickey Callaway. The team was close to making the playoffs, as five games can be pointed to as key reasons the team missed the playoffs.
Another large factor was the struggles of second baseman Robinson Cano, who was acquired from the Seattle Mariners with Edwin Diaz (who had his own struggles as well). Cano slashed .256/.307/.428 in his first season in Queens, and he spent three stints on the injured list after avoiding it the previous 12 years.