Lugo heading to DL to start year

The final spot on the Mets’ Opening Day roster likely will belong to Rafael Montero.

An industry source confirmed Saturday that Seth Lugo is expected to be placed on the disabled list to begin the season after experiencing recent “fatigue” in his right arm. The Mets had planned to test Lugo in a side session on Sunday, but now appear ready to give Montero the bullpen job.

Lugo battled arm soreness after returning from the World Baseball Classic and indicated he might have pushed too hard in the final week of spring training in his attempt to win a job.

And so, the Mets appear likely to begin the season with both Lugo and Steven Matz sidelined by arm issues. The lefty Matz was recently shut down from throwing for at least three weeks because of irritation in his elbow.

Lugo was competing for a rotation spot, but Zack Wheeler and Robert Gsellman were last week named as the starters behind Noah Syndergaard, Jacob deGrom and Matt Harvey.

Reliever Fernando Salas was limited to just five spring training games because of a delay receiving his work visa, but appeared sharp in his final two appearances, in which he did not allow a base runner over 1 2/3 innings.

“I feel more confidence, and I’m ready for the season,” he said.

Witt closer Jeurys Familia serving a 15-game suspension for violating MLB’s domestic violence policy, Addison Reed will shift to the closer’s role, with Salas likely receiving much of the eighth-inning work. But manager Terry Collins has also said he may look to mix and match in the eighth inning until Familia returns.

Zack Wheeler threw 68 pitches in a camp game Saturday in Port St. Lucie, Fla. The right-hander is scheduled to pitch against the Marlins on Friday at Citi Field for his first major league start since 2014.