Michael Conforto has a tear in the posterior capsule of his left shoulder and all treatment options, including surgery, are being considered.

The New York Mets revealed the results of an MRI on Thursday.

Conforto collapsed in pain after swinging at a pitch in the fifth inning against the Arizona Diamondbacks on Thursday.

Initial X-rays on the shoulder revealed a dislocation, but follow-up tests showed the tear. Conforto will go on the disabled list Friday.

"It turns your stomach," manager Terry Collins said. "A player was having a tremendous year and really making a name for himself. To go down like that, and that kind of injury, is tough to watch."