MIAMI -- New York Jets star cornerback Darrelle Revis will undergo an MRI on Monday morning on his left knee, which buckled Sunday and forced him out of the Jets' 23-20 overtime victory against the Miami Dolphins.

The Jets fear it could be a serious injury, perhaps an ACL tear, but team officials were tight-lipped after the game.

"No news yet," coach Rex Ryan said. "Clearly, with Darrelle ... your best player, of course you're going to be concerned. I don't know anything about it right now. We'll find out with the MRI."

Revis, dressed in a gray suit after the game, declined to comment when approached by ESPNNewYork.com. He appeared to be in good spirits as he talked with friends outside the Jets' locker room, even laughing.

Revis walked to the team bus without the aid of crutches but with a noticeable limp as he wheeled his roller-board luggage behind. Two hours earlier, the All-Pro cornerback was grimacing in pain as he lay on the field after a non-contact injury with 3:54 remaining in the third quarter.

After being examined on the sideline, Revis was carted off to the locker room. Curiously, he didn't sprawl out on the back of the cart, as most injured players do. He sat in the passenger seat, next to the driver. There was a look of resignation on his face. The driver patted him on the shoulder pads, almost as if he were consoling him.

Revis was hurt while trying to tackle running back Daniel Thomas, who caught an 11-yard reverse screen pass from Ryan Tannehill. Center Mike Pouncey took down Revis with a cut block, but judging from the replay, it appears the injury may have occurred before the block.

Revis has no history of knee injuries. This was his first game back after sitting out a week with what the team called a mild concussion.

Losing him for an extended period would be a crushing blow for the Jets' defense, which relies heavily on his man-to-man coverage skills. Revis made a key fumble recovery in the third quarter Sunday.

"It's huge," linebacker Calvin Pace said. "I wouldn't necessarily call it devastating. We've got enough guys who have played. In this day in the league, it's a next-man-up mentality. I hope it's nothing serious. If he can't play, it has to be Kyle (Wilson) or Ellis (Lankster) or whoever. We have to keep moving because we have some opponents with serious weapons."