LSU roared back from 28 points down to beat Troy, completing the biggest comeback in school history when Charles Scott scored with 4:50 left to put 19th-ranked LSU ahead for good in a 40-31 win Saturday night in Baton Rouge, La.

Troy went up 31-3 midway through the third quarter, but LSU (7-3) answered with a touchdown late in the quarter and then ran off 30 points in the fourth to avoid an embarrassing loss.

LSU had touchdowns on three straight possessions to cut Troy’s lead to 31-24 with 10:33 left.

The go-ahead score was set up when a punt bounced off the leg of Troy’s Jorrick Calvin and the Tigers recovered at the Trojans’ 16. Scott scored four plays later after about two-thirds of the fans had left by the end of the third quarter.

(1) Alabama 32, Mississippi State 7: Javier Arenas ran back a punt 80 yards for one touchdown and set up a score with another long return, helping the Crimson Tide (11-0, 7-0 Southeastern Conference) beat the Bulldogs (3-7, 1-5) in Tuscaloosa, Ala.

Kareem Jackson blocked a punt in the end zone for a safety and Leigh Tiffin kicked three field goals for Alabama.

(4) Texas 35, Kansas 7: Colt McCoy burned the Big 12’s worst pass defense for 255 yards and two record-breaking touchdowns and the Longhorns (10-1, 6-1 Big 12) stayed in the thick of the national championship hunt with a victory over the Jayhawks (6-5, 3-4) in Lawrence, Kan.

(7) Penn State 34, Indiana 7: Derrick Williams ran for one score and caught a TD pass and Daryll Clark threw for 240 yards and two scores as the Nittany Lions (10-1, 6-1 Big Ten) routed the Hoosiers (3-8, 1-6) in State College, Pa.

(8) Utah 63, San Diego State 14: Brian Johnson threw a career-high five touchdown passes and the Utes (11-0, 7-0) beat the Aztecs (1-10, 0-7) in San Diego to clinch at least a share of the Mountain West Conference title.

(10) Ohio State 30, Illinois 20: Beanie Wells rushed for 143 yards and a touchdown and QB Terrelle Pryor ran for 110 yards and a score as the Buckeyes (9-2, 6-1 Big Ten) held off the Illini (5-6, 3-4) in Champaign, Ill.

(11) Oklahoma State 30, Colorado 17: Zac Robinson broke Colorado’s hearts again, leading the Cowboys (9-2, 5-2 Big 12) past the Buffaloes (5-6, 2-5) in Boulder, Colo., four years after spurning a scholarship offer from Colorado – his home state. Robinson threw for 217 yards and a touchdown and ran for another.

(12) Missouri 52, Iowa State 20: Chase Daniel threw for 328 yards and two touchdowns and the Tigers (9-2, 5-2) clinched the Big 12 North and a spot in the conference title game by crushing the Cyclones (2-9, 0-7) in Ames, Iowa.

(13) Georgia 17, Auburn 13: Knowshon Moreno rushed for 134 yards and caught a touchdown pass to help the Bulldogs (9-2, 6-2 SEC) beat the Tigers (5-6, 2-5) in Auburn, Ala. Georgia went ahead for good with 8:24 to play on a 17-yard pass from Matthew Stafford to A.J. Green.

(16) BYU 38, Air Force 24: Max Hall threw for 354 yards and two TDs and Harvey Unga added two TDs in a 74-second span in the third quarter as the Cougars (10-1, 6-1 MWC) beat the Falcons (8-3, 5-2) in Air Force Academy, Colo.

Maryland 17, (17) North Carolina 15: Chris Turner engineered a dramatic fourth-quarter drive that produced a 26-yard field goal by Obi Egekeze with 1:42 left, and the Terrapins (7-3, 4-2 Atlantic Coast Conference) beat the Tar Heels (7-3, 3-3) in College Park, Md., for its school-record sixth consecutive win over a ranked opponent.

Boston College 27, (20) Florida State 17: Montel Harris ran for 121 yards and a touchdown and Marcellus Bowman went 87 yards with an interception for another score to help the Eagles (7-3, 3-3 ACC) beat the Seminoles (7-3, 4-3) in Tallahassee, Fla.

Houston 70, (25) Tulsa 30: Case Keenum threw a career-high six touchdowns and ran for another score to help the Cougars (6-4, 5-1 Conference USA) stun the Golden Hurricane (8-2, 5-1) in Houston.