Making his big league debut, McLean shut out the Seattle Mariners over 5 1/3 innings on Saturday afternoon at Citi Field in a 3-1 win, navigating a deep lineup with an array of spinning breaking pitches. It was an impressive outing for the rookie right-hander, but when manager Carlos Mendoza went out to the mound in the sixth, fans booed the move.

Rookie Nolan McLean delivered what the Mets needed in his MLB debut, striking out eight and flashing some clutch leather over 5⅓ scoreless innings in a 3-1 win over the Mariners.

Right-handed pitcher Nolan McLean, the Mets' No. 3 prospect according to MLB Pipeline, will make his Major League Baseball debut on Saturday at an inopportune time, with his team mired in a horrific slump and All-Star Bryan Woo on the mound for the opposing Seattle Mariners.