GAINESVILLE, Fla. — Florida quarterback Tim Tebow is back home after spending the night in the hospital with a concussion. How long before he plays again is now the big question facing the Gators.

Tebow was released from a Lexington, Ky., hospital yesterday morning, about 12 hours after sustaining a concussion in the Gators' 41-7 victory at Kentucky. He was held for precautionary reasons and tests.

"Tim is doing fine this morning," said coach Urban Meyer, who stayed behind with Tebow. "His CT scans came back and indicated that Tim suffered a concussion. Our medical and athletic training staff will continue to monitor him to determine how much rest and recovery he needs. We will have additional information and updates this week."

Tebow flew back to Gainesville with Meyer and his family yesterday.

"Everyone is concerned about Tim, and our thoughts and our prayers are with him and his family," said associate head coach Charlie Strong.

The top-ranked Gators (4-0) are off this week, then play at LSU on Oct. 10. It might be several days, maybe longer, before Tebow's status becomes clearer for what could be the toughest game on the defending national champions' schedule.

The Gators led 31-7 in the third quarter and were driving deep in Kentucky territory when defensive end Taylor Wyndham came unblocked off the right end and sacked Tebow. As Tebow fell backward, his helmet struck teammate Marcus Gilbert's leg, violently bending his neck forward.

ELSEWHERE

Baylor: Sophomore quarterback Robert Griffin, who has an isolated tear in his ACL of his right knee, will miss the rest of the season. Griffin was injured on the first series of Saturday's 68-13 victory over Northwestern State, but returned to throw for 226 yards and three TDs before sitting out the second half.

Alabama: Linebacker Dont'a Hightower, who started 12 games as a freshman last year, will have surgery to repair ligament damage in his left knee, and coach Nick Saban would not say if Hightower would return this season.