Once adamant that being a two-way player was his destiny, McLean abandoned the bat in favor of the ball before this season. It has resulted in him climbing the prospect rankings, earning a promotion to Triple-A in May and now a call to the big leagues.

The Mets are about to promote one of the most promising pitching prospects they've developed in years. No. 3 Mets prospect Nolan McLean, ranked 37th in baseball, will make his Major League debut Saturday in a start at Citi Field against the Mariners,

McLean throws with incredible spin, which has fueled his rise through the minors: "He can make the ball do crazy stuff."