LEXINGTON, Ky. — With one scary hit on Tim Tebow, the fate of No. 1 Florida — and really, the entire complexion of the college football season — could have changed.

The Heisman Trophy-winning quarterback was knocked out of Florida's 41-7 victory against Kentucky after a hard shot to the head in the third quarter, and taken by ambulance to a hospital.

"I don't know, I think it's a concussion," Florida coach Urban Meyer said. "I think he'll be all right.

"He took a pretty good shot."

Tebow was scheduled to stay overnight in the hospital, Florida spokesman Steve McClain said.

The Gators were leading 31-7 and driving deep in Kentucky territory when Tebow was sacked by Kentucky defensive end Taylor Wyndham on a vicious but clean hit. As he fell back with Wyndham on top of him, Tebow's head struck teammate Marcus Gilbert's leg, violently bending his neck forward.

Tebow, a tank of a quarterback at 245 pounds, lay motionless for several minutes while Commonwealth Stadium fell silent. He sat up with some help then slowly made his way off the field to a loud ovation. He was eventually carted off the field with concussion-like symptoms, vomiting several times.

Florida is off next week, then plays at LSU on Oct. 10. It's probably the toughest game on Florida's regular-season schedule and would be even tougher without Tebow.

A third national title in four seasons for Florida, a second Heisman for Tebow, all that becomes iffy if his injury causes him to miss games. Oddly, Saturday started with questions about Tebow's availability because of a respiratory illness.

Meyer said Tebow had just one question after the hit.

"He asked me 'Did I hold onto the ball?' " Meyer said. "I told him he did and he winked at me and said 'It's great to be a Gator.' "

The win extended Florida's winning streak to 14 games, tops in the nation as the Gators (4-0, 2-0 Southeastern Conference) continued their mastery over the Wildcats (2-1, 0-1). Florida has won 23 straight in the series, the second longest active winning streak by one team over another in the country.

No. 2 Texas 64, Texas-El Paso 7: Colt McCoy passed for 286 yards and three touchdowns, two to Dan Buckner, and the host Longhorns (4-0) also harassed quarterback Trevor Vittatoe into five turnovers to beat the Miners (1-3) at Austin, Texas.

Texas got the fast start it had been missing in recent weeks, rolling to a 40-point lead by halftime.

No. 3 Alabama 35, Arkansas 7: Greg McElroy passed for a career-high 291 yards and three touchdowns and Trent Richardson broke four tackles en route to a 52-yard touchdown run as the Crimson Tide (4-0, 1-0 SEC) routed the Razorbacks (1-2, 0-2) at Tuscaloosa, Ala.

A relentless defense hounded Ryan Mallett and the nation's No. 2 offense. Mallett was just 12-for-35 for 161 yards for Arkansas and threw his first interception.

Iowa 21, No. 5 Penn State 10: Adrian Clayborn returned a block punt for a touchdown and the Hawkeyes (4-0, 1-0 Big Ten) left soggy Happy Valley in State College, Pa., with their second straight upset of the Nittany Lions (3-1, 0-1).

After falling behind 10-0 early, Iowa's defense shut down quarterback Daryll Clark and the Penn State offense.

NO. 7 LSU 30, MISSISSIPPI STATE 26: Brandon LaFell had 101 yards and two touchdown catches, Chad Jones scored on a 93-yard punt return and Tigers (4-0, 2-0 SEC) stuffed quarterback Tyson Lee on fourth and goal from inside the one with 1:08 to play in turning back the Bulldogs (2-2, 1-2) at Starkville, Miss.

Patrick Peterson returned one of Lee's three interceptions for a 37-yard touchdown on Mississippi State's first offensive play.

No. 11 Virginia Tech 31, No. 9 Miami 7: Ryan Williams' 2-yard run 5:14 into the game capped an 11-yard drive triggered by quarterback Jacory Harris' fumble and the Hokies (3-1, 1-0 Atlantic Coast Conference) kept piling it on in beating the Hurricanes (2-1, 2-1) at Blacksburg, Va.

No. 13 Ohio State 30, Illinois 0: Dan Herron, who threw for 82 yards and a touchdown, slogged through a downpour for 75 yards and two touchdowns as the Buckeyes (3-1, 1-0 Big Ten) earned a second straight shutout for the first time in 13 years, beating the Illini (1-2, 0-1) at Columbus, Ohio.

No. 15 TCU 14, Clemson 10: Andy Dalton threw two touchdown passes, including a 26-yarder to Antonio Hicks with 12:46 left to play for a 14-10 lead and the Horned Frogs (3-0) held the Tigers (2-2) to 125 yards in the second half at Clemson, S.C.

No. 16 Oklahoma State 56, Grambling State 6: Keith Toston ran for 84 yards and three first-half touchdowns, and the Cowboys (3-1) rolled up 587 yards of total offense, including 321 on the ground, to beat the Tigers (2-2) at Stillwater, Okla.

No. 17 Houston 29, Texas Tech 28: Case Keenum ran 4 yards for a touchdown with 49 seconds left as the Cougars (3-0), playing as a ranked team for the first time in 18 years, rallied from a 21-10 halftime deficit to beat the Red Raiders (2-2) at Houston.

South Florida 17, No. 18 Florida State 7: Redshirt freshman B.J. Daniels ran for 126 yards and threw two touchdown passes in his first start as the visiting Bulls (4-0) upset the Seminoles (2-2) at Tallahassee, Fla., in the first meeting between the schools. Daniels was filling in for senior Matt Grothe, out for the season with a knee injury.

No. 19 BYU 42, Colorado State 23: Harvey Unga ran for 113 yards and three touchdowns, and the Cougars (3-1) converted two interceptions and a blocked punt into scores to defeat the Rams (3-1) in the Mountain West Conference opener for both at Provo, Utah.

No. 20 Kansas 35, Southern Mississippi 28: Todd Reesing threw for 331 yards and three touchdowns as the Jayhawks (4-0) held off the Golden Eagles (3-1), who got 331 yards passing and three touchdown throws from Austin Davis, at Lawrence, Kan.

No. 21 Georgia 20, Arizona State 17: A.J. Green caught eight passes for 153 yards, including a 56-yard touchdown, and Blair Walsh kicked a 37-yard field goal on the final play as the Bulldogs (3-1) beat the Sun Devils (2-1) at Athens, Ga.

Georgia Tech 24, No. 22 North Carolina 7: Quarterback Josh Nesbitt ran for two touchdowns and the Yellow Jackets (3-1, 2-1 Atlantic Coast Conference) held the Tar Heels (3-1, 0-1) to 154 yards of offense at Atlanta.

No. 23 Michigan 36, Indiana 33: Freshman Tate Forcier threw a 26-yard TD pass to Martavious Odoms with 2:29 left and the Wolverines (4-0, 1-0 Big Ten) held off the Hoosiers (3-1, 0-1) at Ann Arbor, Mich., when Donovan Warren intercepted a pass on the next play.

Stanford 34, No. 24 Washington 14: Chris Owusu returned the opening kick 91 yards for a touchdown and Toby Gerhart ran for a career-high 200 yards and a score to help the Cardinal (3-1, 2-0 PAC-10) spoil the Huskies' (2-2, 1-1) first game as a ranked team in six years with an upset at Stanford, Calif.

No. 25 Nebraska 55, Louisiana-Lafayette 0: Zac Lee passed for 238 yards and a touchdown, Roy Helu Jr. scored twice and the Cornhuskers (3-1) scored on their first possession and celebrated their 300th consecutive sellout in Lincoln with a rout of the Ragin' Cajuns (2-2).