Harvey considering season-ending shoulder surgery

Whether it happens now or later, the New York Mets expect Matt Harvey to undergo surgery.

General manager Sandy Alderson spoke Thursday and told reporters the right-hander has been diagnosed with symptoms consistent with thoracic outlet syndrome.

Related: Mets fear Harvey could have nerve condition

Although he's banking on the worst, the diagnosis leaves Harvey with two options - a non-surgical injection that would result in a temporary fix, or season-ending surgery.

"I do believe that surgery is probably inevitable and more a question of timing than anything else," Alderson told reporters. "So obviously to the extent that we're backed up for a period of time, it begins potentially to encroach on 2017 as well."

Alderson added that Harvey is still weighing his options and hasn't made a decision yet, though he's expected to make one before the All-Star break.

"He came in the training room afterward and said, 'My shoulder is dead. My arm is dead. There's no energy there. I couldn't feel the ball,'" Mets manager Terry Collins said. "Obviously it was happening during the game. He didn't say anything until after the game."

In his second season removed from Tommy John surgery, Harvey is 4-10 with a 4.86 ERA in 17 starts. In his last start against the Miami Marlins on Monday, he gave up six runs on 11 hits in 3 2/3 innings.