Byrdak, who downplayed the seriousness of his injury when he landed on the disabled list with left shoulder soreness over the weekend, underwent an MRI Monday and has been diagnosed with an anterior capsule tear -- the same injury that precipitated major surgery for pitchers Johan Santana and Chris Young. In a release, the Mets said that "the treatment for this injury has not been finalized, but surgery is a possibility."
Byrdak has posted a 4.40 ERA over a team-high 56 appearances this season. In his absence, rookie Josh Edgin will continue to serve as the team's primary left-handed specialist. But the Mets also announced Monday that they plan to recall lefty Garrett Olson from Triple-A Buffalo in time for Tuesday's game.
An MRI for catcher Rob Johnson revealed a contusion to his right hand, which he suffered during a play at the plate in Sunday's game against the Padres. Johnson is day to day.
The Mets also announced that the injury outfielder Kirk Nieuwenhuis suffered last week at Triple-A Buffalo was indeed a partial tear of the plantar fascia in his right foot. Nieuwenhuis, who spent most of the first four months of this season with the Mets, plans to avoid surgery and report to Port St. Lucie for rehabilitation as symptoms permit.