Nolan McLean delivered a promising big-league debut for the Mets, firing 5 1/3 shutout innings with eight strikeouts and four walks as New York beat Seattle 3-1 at Citi Field. The rookie, working with a deep breaking-ball mix, exited after 91 pitches with the Mets clinging to a 3-0 lead before Eugenio Suárez homered in the ninth for Seattle. Francisco Lindor’s RBI double plated Brett Baty to stake the Mets in front in the third, and Pete Alonso added a late insurance run with a two-bagger that scored Nimmo. Edwin Díaz finished with a six-out save (24), snapping a four-game skid and pushing the Mets to 15 wins in 17 games. Mendoza’s mound visit in the sixth drew boos from a sellout crowd of 42,978, underscoring the Mets’ ongoing concern about starting-pitching length despite McLean’s impressive bow.