That was one costly clincher. It may wind up ending the Yankee shortstop’s season.

Didi Gregorius suffered a small cartilage tear in his right wrist from his headfirst slide to lock up the Yankees’ playoff berth Saturday night, an MRI on Sunday revealed. One of the team’s linchpins received a cortisone shot and will be reevaluated in a few days. But his status moving forward is unclear.

“Unsure,” manager Aaron Boone said, when asked if he believes Gregorius can return this year. “I think there’s a real possibility we do [get him back]. There’s also a possibility that we don’t. We’ll know a lot more in a few days and see how the wrist responds to the cortisone shot.”

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