News of d'Arnaud's surgery came on the same day the Mets announced their other main catcher, Kevin Plawecki, has a hairline fracture in his left hand. D'Arnaud was diagnosed earlier this week with a partially torn ulnar collateral ligament in his right elbow.
At the major-league level, Lobaton and Tomas Nido are likely to split the catching duties until Plawecki returns, with Lobaton likely getting the majority of the playing time.
Because of the location of the tear, d'Arnaud said it was unlikely to heal without surgery.
Only the Mets could descend so quickly from the euphoria over their torrid burst out of the starting blocks into instant scramble mode with both of their catchers suddenly landing on the disabled list. "We are going to be certainly aware of what else may available out there, and we'll monitor that market". Tommy John recovery times aren't quite as lengthy for position players as for pitchers, so d'Arnaud could be back at the start of next season. A postgame X-ray was negative, but an MRI in NY on Thursday showed a hairline fracture.
His return date will be determined by the return of grip strength and pain tolerance.
Suffice it to say, it's been a devastating 48 hours for the Mets, who just days ago were counting on d'Arnaud and Plawecki to shoulder the entirety of their catching work in 2018. The Mets also recalled outfielder Brandon Nimmo from Las Vegas and optioned right-hander Jacob Rhame to the 51s.
Callaway wouldn't commit to making Lobaton or Nido the regular starter. During the Mets' 2015 World Series season, he broke his right hand after being hit by a pitch, missing 46 games.