Photo by Ed Delany of Metsmerized

Kodai Senga threw on Monday, a day after being scratched from his scheduled spring training start with right index finger tendinitis.

Senga was seen throwing off flat ground, although it didn’t appear to be a maximum effort.

Senga is confident he’ll be ready for the start of the season and manager Buck Showalter backed his pitcher saying it was a precautionary move not to have the righty pitch on Sunday.

It’s possible the injury is due to the difference in the baseball used in MLB versus Japan’s Nippon Professional Baseball. It has caused issues for other players in the past, general manager Billy Eppler exclaimed.

The Mets pitching staff has caught the injury bug recently. Free agent acquisition Jose Quintana was shut down last week with what the Mets said is a “small stress fracture on his fifth rib on his left side.”

An update on Quintana is expected to be provided on Wednesday, said Eppler.

Additionally, Brooks Raley was scratched from Team USA with hamstring tightness. He was taken off the World Baseball Classic roster and replaced by former Met Aaron Loup.

If everything goes to plan, the low-grade hamstring strain will allow Raley to be ready for the start of the season on March 30.

The Mets also lost reliever Bryce Montes De Oca for the foreseeable future. The flamethrower trying to crack a roster spot left Sunday’s game with a forearm injury. He’s scheduled to undergo imaging this week.