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.

The Mets, as manager Carlos Mendoza put it, did not need Nolan McLean to play hero in his major league debut Saturday. They just wanted a good start, an outing that would give New York a chance to beat the Seattle Mariners and maybe,