Source: Darrelle Revis OK

EAST RUTHERFORD, N.J. -- Darrelle Revis left the fourth quarter of Sunday's game with a head injury, but a source close to the star cornerback said he is not significantly injured.

Revis was standing at his locker and speaking with his teammates but did not address the media after the New York Jets' 48-28 win over the Buffalo Bills. The Jets' public relations staff cited NFL rules that state a player leaving the game with a head injury doesn't have to speak to reporters.

"Darrelle Revis went out with a head injury, so I don't know how severe it is," Jets coach Rex Ryan said. "I saw him after the game and he looked good. Hopefully he's OK, but we'll find out."

The NFL has directed teams to be much more cautious with head injuries and potential concussions. Teammates were optimistic that Revis isn't significantly hurt.

"Hopefully it's not serious. With the concussion deal these days you have to be extra precautionary," linebacker Calvin Pace said. "Hopefully it's not too bad. I don't know the extent of it. I think he got kicked in the back of the head. Hopefully he'll be fine."

After laying out to catch C.J. Spiller on a play, Revis landed on his stomach and a running Bart Scott kicked him in the head. Revis took a moment to get up and was examined by the team's medical staff.

"We were joking with Bart, messing with him," cornerback Antonio Cromartie said. "I think (Revis is) all right, he's fine."

Revis, one of the Jets' most valuable players, intercepted Bills quarterback Ryan Fitzpatrick during the first series of the game.