PORT ST. LUCIE, Fla. -- Mets reliever Josh Edgin has a stretched left elbow ligament and tendinitis, and the team saus he must decide between a conservative rehabilitation attempt or Tommy John surgery that would sideline him for about a year.

"A decision is expected in the next day or two," Mets general manager Sandy Alderson said Thursday. "It's not black or white. There's a certain amount of gray area here that requires some judgment on the physicians' part, as well as Josh deciding exactly how he wants to approach it."

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The 28-year-old left-hander experienced elbow discomfort and gave up back-to-back RBI triples to left-handed hitters in 13-2 loss Monday to Miami.

Alderson said Edgin could try rehab for two-to-three weeks and choose surgery later if his elbow didn't respond. Alderson did not think the ligament would tighten without surgery and said Edgin likely would start the season on the disabled list no matter the choice.

"It's disappointing," Edgin said. "Actually, really disappointing. We're going to have a great year this year, whether it's with me or without me."

Edgin was 1-0 with a 1.32 ERA in 47 appearances last season. He missed two weeks late in the season because of tendinitis and bone spurs in his elbow, and he received a platelet-rich plasma injection.

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New York's only other left-handed relievers in camp are Sean Gilmartin, who was selected from Minnesota in the winter meeting draft; and a trio at spring training with minor league contracts: Scott Rice, Dario Alvarez and Jack Leathersich.