MIAMI — Only two weeks old, the Mets’ 2018 season already has a distinctly different feel from last year’s campaign. After yet another comeback, a 4-1 victory over the Miami Marlins on Wednesday for their eighth consecutive win, the Mets extended their franchise-best start to 10-1. With Zack Wheeler’s stellar start, the Mets’ oft-injured Big Five starters finally made one mostly ceremonial turn through the rotation.

And until Wednesday, the Mets’ roster has avoided a major injury, unlike a 2017 campaign that was full of them. But that run of good fortune came to an end in the afternoon, when the team announced that catcher Travis d’Arnaud had been diagnosed with a partially torn ulnar collateral ligament.

D’Arnaud, 29, was part of a catching platoon with Kevin Plawecki. A day after complaining to the team of right elbow soreness, d’Arnaud flew to New York for examination, and in the next few days he will decide on his treatment plan, which could be rest and rehabilitation or season-ending Tommy John surgery.

“That’s tough,” Mets Manager Mickey Callaway said. “That’s a long road if he goes the surgery route.”