Good news, Mets fans: Francisco Alvarez is starting a rehab assignment Wednesday.

The catcher’s right thumb isn’t giving him any issues, and he’s able to grip a bat and throw a ball without pain, which should allow him to continue playing this season.

“It’s surprising. I thought initially, when I got injured, that there would be more pain, or there would be just like a level of discomfort,” he said Tuesday through a team translator. “But up until this point, there’s been none of that.”

While the injury will require surgery, the fact that he doesn’t have any pain will allow him to put it off until the offseason. Barring any setbacks in minor league rehab games, this gives the Mets an impact bat for the final month of the season. Since returning from a minor league tune-up of sorts in J

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