Alonso behind fictional coach

Donnie Stevenson and Pete Alonso are one and the same.

An industry source Monday confirmed a report by The Athletic that the fictional “approach coach” credited for the Mets’ offensive turnaround during a recent series in Philadelphia was actually Alonso in disguise.

The Mets first baseman wore a hat and sunglasses to the hitters’ meeting before the team faced Zack Wheeler on May 1, according to the source. As Donnie Stevenson, Alonso preached the need for the Mets to stick with their strengths as a lineup.