With Dillon Gee on the disabled list, the New York Mets announced that Noah Syndergaard, their top pitching prospect, would be called up from Class AAA Las Vegas. He is scheduled to make his major league debut Tuesday against the Chicago Cubs at Wrigley Field.

“Noah’s well-deserving,” General Manager Sandy Alderson said. “He’s the guy.”

At one point, however, Syndergaard did not seem like “the guy.” In spring training, the left-hander Steven Matz impressed the Mets with his power stuff and his poise.

Alderson indicated that Syndergaard had gotten the call now mostly because he had more experience. Syndergaard has pitched 31 games at the Class AAA level, dating to last year, while Matz has pitched only six games there, all of them this season.

“Steve’s done a great job, too,” Alderson said. “But he’s only pitched 30, 35 innings or so at Triple-A. Got a lot of talent, a lot of potential. Would be an equally qualified candidate.”