Since Jacob deGrom’s Cy Young run began in 2018, the Mets have gone 31-37 in games he’s pitched. They know how inconsequential a day’s starter can ultimately be.
Revealing hours before Wednesday’s game against the Nationals that Robert Gsellman would make his first start in nearly three years, the Mets watched the right-hander surrender the game’s first three runs and be limited to two innings on the mound, only for six relievers and a bevy of bats combined to clobber the reigning champs and end a two-game slide with an 11-6 win at Citi Field.
Most importantly, Pete Alonso showed signs of breaking out of his sophomore slump, blasting his third home run of the season and a pair of doubles, with three RBIs, three runs and a walk. Dominic Smith, who combined with Alonso for the team’s first back-to-back homers in a game-sealing, five-run sixth inning, also collected his third home run and three RBIs. Brandon Nimmo aided the offensive explosions with his third homer of the season, while finishing 3-for-5.
Filling in for the injured Michael Wacha, Gsellman — who was scheduled to throw no more than 60 pitches — gave Luis Rojas reason to second-guess his…