PORT ST. LUCIE, Fla. — Four Mets players, outfielders Brandon Nimmo and Jesse Winker, and relievers José Buttó and Dedniel Núñez, all overcame injury concerns on Monday.

Paul Blackburn and Griffin Canning took their shots at securing a spot in the Mets Opening Day rotation, as both started on Monday.

Opening Day is baseball’s version of a plot twist—when fans think they’ve got the script figured out, the story takes a turn. The cast of characters breaking ca ...