Maybe Joe Paterno needs a new halftime speech.
His No. 10 Penn State team was sluggish in the second half -- again -- and against Iowa's stingy second-half defense, it cost the Nittany Lions dearly.
The Hawkeyes shut out and shut down Penn State after halftime for a 21-20 upset in rainy conditions Saturday.
Iowa (5-1 overall, 3-0 in the Big Ten Conference), which has given up just three fourth-quarter points all year, only allowed four first downs and 76 total yards in the second half. This season, Penn State has scored just 58 of its 219 points in the second half.
Paterno, whose Lions (6-2, 2-2) led, 20-14, at the half, said he couldn't explain the late-game breakdowns.
"That's about the third time that's happened to us," Paterno said. "I thought our defense played a great 60 minutes, but obviously our offense did not have it in the second half for whatever reason."
Matt Hughes and Damien Robinson each had 14 tackles for Iowa, which beat Penn State for the first time since 1983.
"It's extremely difficult to win up here, and to win the game the way we did is super," Iowa coach Hayden Fry said. "Big play after big play."
Offensively, the Hawkeyes were led by Tavian Banks, who was starting for injured Sedric Shaw. Banks ran 26 times for 116 yards and two touchdowns -- including the winner with 12:39 to play.
His 8-yard touchdown run was set up by Wally Richardson's second fumble, caused by Kerry Cooks and recovered by Jared DeVries.
Tim Dwight returned a first-quarter punt 83 yards for a touchdown and he set up Banks' 5-yard TD run in the second quarter with a 65-yard reception.
"What a happy group of young men," said Fry, whose squad did the hokey pokey in the locker room in celebration. "We showed lots of heart, a lot of character and our defense in the second half was just super."
Richardson had a long afternoon, completing just 10 of 30 passes for 106 yards and a touchdown and getting sacked five times.
"Wally's not the problem. Believe me he's not," said Paterno, who then admitted he was thinking about putting in backup Mike McQueary to change the tempo. "Our pass protection was horrendous."
Northwestern 34, Wisconsin 30
MADISON, Wis. -- Move over Joe Pisarcik and Larry Csonka for the Wisconsin Badgers, who earned a place in football's infamous follies.
Steve Schnur threw a 20-yard touchdown to D'Wayne Bates with 37 seconds left as No. 14 Northwestern beat Wisconsin in the Big Ten. How Schnur got the chance is the real story.
The Wildcats (6-1, 4-0) looked like certain losers when Brian Gowins was wide left on a 55-yard field goal attempt with 1:33 left, giving the Badgers (3-3, 0-3) the ball at their 38.
Because Northwestern had just one timeout left, all the Badgers had to do to wrap up the victory was kneel down on three straight snaps. However, quarterback Mike Samuel twice handed off to tailback Ron Dayne.
"I didn't think about taking a knee," Badgers coach Barry Alvarez said. "We gained 7 yards on the first carry, and we didn't want to give the ball back to them."
After Dayne gained 7 yards on the first carry, Northwestern defensive tackle Joe Reiff disrupted the second handoff and Dayne fumbled.
"I thought it was all right what we were doing," Dayne said. "It was just a bad exchange. I don't know what happened."
Safety Eric Collier recovered at the Badgers 41 with 49 seconds left. Schnur scrambled for 21 yards, then hit Bates with a fade pass in the end zone and the Wildcats had their 12th straight Big Ten victory.
Florida 51, Auburn 10
GAINESVILLE, Fla. -- Florida's defense made Auburn quarterback Dameyune Craig eat his words. Danny Wuerffel and the Fun 'N' Gun offense took care of the rest.
Wuerffel threw for 346 yards and three touchdowns, and Fred Taylor and Elijah Williams ran for more than 100 yards for the second straight game to lead No. 1 Florida to a Southeastern Conference victory over 16th-ranked Auburn.
The win gave Florida (7-0, 5-0) a smooth road to a Nov. 30 showdown with No. 3 Florida State. It was the most points scored against Auburn (5-2, 3-2) since a 55-0 loss to Alabama in 1948.
The Tigers were the last team to beat Florida in the "Swamp," a 36-33 victory in 1994 that knocked the Gators from No. 1.
Craig, who set a school record with 394 yards passing against Mississippi State last week, had said there was "no doubt in my mind" Auburn could beat the Gators again, adding that "Florida's defense hasn't been tested."
Craig was 7 of 28 for 82 yards and two interceptions. He was sacked seven times, and avoided three others by escaping just beyond the line of scrimmage.
Wuerffel broke open a 21-10 game at halftime by leading the Gators 78 yards for a field goal and then throwing an 8-yard touchdown pass to Reidel Anthony to make it 30-10.
Arizona St. 48, USC 35 (2 OT)
TEMPE, Ariz. -- Terry Battle's fourth touchdown of the game -- a 25-yard run in the second overtime -- and freshman Courtney Jackson's 85-yard fumble return gave No. 4 Arizona State a Pacific-10 Conference win over Southern California.
"I thought we had encountered everything we could this season. This one was totally different," said Arizona State coach Bruce Snyder. "We took USC's best punch and didn't go down."
Arizona State (7-0, 4-0) forced overtime at 28-28 on Battle's 7-yard touchdown run with 1:30 remaining. USC (4-3, 2-2) scored first in overtime on Brad Otton's 10-yard pass to Rodney Sermons. The Sun Devils matched it when Jake Plummer hit Keith Poole from 6 yards out.
Battle, who had a career-high 192 yards on 30 carries, gave Arizona State its first lead with a 25-yard run on the Sun Devils' first play of the second overtime.
On third-and-6 from the Arizona State 21, Otton fumbled a pitch out and Jackson scooped up the ball and raced untouched along the sidelines for the final points.
Ohio St. 42, Purdue 14
WEST LAFAYETTE, Ind. -- Pepe Pearson rushed for 152 yards, including a 64-yard touchdown run, as second-ranked Ohio State overcame its biggest deficit of the season to defeat Purdue in the Big Ten.
Purdue (2-5, 1-3) shocked Ohio State (6-0, 3-0) with two long touchdown pass plays in opening a 14-0 lead.
The teams were tied at 14-14 at halftime before the Buckeyes pulled away despite having starting quarterback Stanley Jackson ejected in the third quarter for kicking a Boilermakers player after being sacked.
"I got sacked and one of their players was twisting my ankle. I retaliated," Jackson said. "It was a bad decision on my part. I have to be smarter than that."
Nebraska 24, Texas Tech 10
LUBBOCK, Texas -- Damon Benning scored two fourth-quarter touchdowns to lead fifth-ranked Nebraska by Texas Tech (4-3, 3-2) in the Big 12.
Benning returned a punt 51 yards and two plays later scored on a 5-yard run on which he fumbled the ball but recovered in stride.
The score was tied at 10-10 at the half, with the Red Raiders capitalizing on a fumble by Benning and a 7-yard touchdown return of an interception by rover back Robert Johnson off a pass from the end zone by Husker quarterback Scott Frost.
But Frost scored the go-ahead TD on a 3-yard run 5 1/2 minutes into the third quarter and Nebraska (5-1, 3-0) took control with its defense, forcing five fumbles and holding Division I-A rushing leader Byron Hanspard to less than half his 217-yard average. He had 107 yards on 31 carries.
Alabama 37, Mississippi 0
TUSCALOOSA, Ala. -- Freddie Kitchens threw touchdown passes of 10 and 60 yards to Michael Vaughn and No. 7 Alabama pounded Mississippi (3-3, 1-3) in the SEC.
Crimson Tide tailback Dennis Riddle surpassed the 100-yard mark for the second straight week, finishing with 140 yards and one touchdown on 31 carries.
For the second straight game, the Crimson Tide (7-0, 4-0) showed flashes of explosiveness on offense, finishing with 489 yards and seven plays of 20 yards or more.
Meanwhile, the country's fifth-ranked defense bounced back after allowing 418 yards last week in a 24-19 win over North Carolina State.
Alabama recorded its first shutout since a 31-0 blanking of Georgia last Sept. 30. The Tide allowed just 158 yards in staying undefeated for its showdown next week against sixth-ranked Tennessee.
Colorado 20, Kansas 7
LAWRENCE, Kan. -- Koy Detmer threw two touchdown passes and moved into second place on the Colorado career passing list as ninth-ranked Buffaloes (5-1, 3-0) beat Kansas (3-3, 1-2) in the Big 12.
Detmer had a 32-yard completion to Phil Savoy during the drive to give him 3,949 career passing yards, still far behind the 6,481 yards of Kordell Stewart. Detmer completed 17 of 35 passes for 233 yards.
East Carolina 31, Miami 6
MIAMI -- East Carolina staged a stunner at the Orange Bowl, giving Miami back-to-back home losses for the first time since 1984.
Marcus Crandell threw three touchdown passes and the Pirates beat 12th-ranked Miami, shutting out the Hurricanes over the final 57 minutes. Crandell completed 17 of 27 passes for 230 yards and no interceptions.
The unranked Pirates (4-2), who were 17-point underdogs, beat Miami for the first time in nine tries. East Carolina's highest-ranked victim previously was No. 15 Syracuse in 1991.
Miami (4-2) was trying to bounce back from a 34-16 loss last week to Florida State. The Hurricanes also lost quarterback Ryan Clement in the first half with a shoulder separation.
Michigan 27, Indiana 20
ANN ARBOR, Mich. -- Scott Dreisbach threw his only touchdown pass when No. 13 Michigan needed it most against Indiana (2-5, 0-4) in the Big Ten.
Dreisbach tossed a 19-yard touchdown to Jermane Tuman late in the third quarter and Remy Hamilton added a fourth-quarter field goal for the Wolverines.
Michigan (5-1, 2-1), a 23-point favorite, trailed, 17-7, in the second quarter.
Dreisbach completed just 17 of 35 passes for 218 yards.
West Virginia 30, Temple 10
PHILADELPHIA -- Freshman Amos Zereoue ran for 136 yards -- his fifth 100-yard rushing game of the season -- and No. 15 West Virginia remained unbeaten by crushing Temple in the Big East.
West Virginia (7-0, 3-0) jumped out to a 14-0 first-quarter lead but then seemed lethargic against Temple (1-6, 0-3), which had been outscored, 190-102, in its previous five games, all losses.
LSU 41, Kentucky 14
BATON ROUGE, La. -- Kevin Faulk gained 265 all-purpose yards and scored two touchdowns as No. 17 LSU beat Kentucky in the SEC.
Faulk rushed for 138 yards and two touchdowns on 21 carries as LSU (5-1, 3-1) outgained Kentucky (1-6, 0-4), 465 yards to 287. Faulk also caught a pass for 24 yards, returned two punts for 48 yards and two kickoffs for 55 yards.
Virginia 62, N.C. State 14
CHARLOTTESVILLE, Va. -- Anthony Poindexter intercepted three passes and blocked a punt, Tiki Barber ran for 106 yards and scored three times and Tim Sherman threw for two TDs as No. 2 Virginia opened a 45-0 halftime lead and crushed North Carolina State (1-5, 1-3) in the Atlantic Coast Conference.
Virginia (5-1, 3-1) had four interceptions and two blocked punts in the first 30 minutes.
Barber finished with 17 carries for 132 yards. He had 213 all-purpose yards.
Kansas State 23, Texas A&M 20
COLLEGE STATION, Texas -- Brian Kavanagh passed for one touchdown and ran for one as No. 21 Kansas State (6-1, 3-1) took advantage of five turnovers and held off Texas A&M's (3-4, 1-2) 17-point second-half comeback for a Big 12 victory.
The Aggies had one final chance to tie or go ahead when Dante Hall caught an 18-yard pass but fumbled and Kansas State's Mark Simoneau recovered at the Kansas State 17 with 53 seconds to play.
Clemson 28, Georgia Tech 25
CLEMSON, S.C. -- Nealon Greene scored on a 1-yard run with 4:06 to go as Clemson, which blew an 11-point lead, rallied to beat 22nd-ranked Georgia Tech in the ACC.
The Tigers (4-3, 3-2) led, 21-10, at the half, but Georgia Tech's Joe Hamilton threw for a touchdown and ran in another to put the Jackets (4-2, 4-2) up, 25-21, in the third quarter.
Wyoming 42, Fresno St. 21
LARAMIE, Wyo. -- Josh Wallwork threw for four touchdowns and Len Sexton scored three touchdowns to lead No. 23 Wyoming (8-0, 5-0) to a Western Athletic Conference victory over Fresno State (2-4, 2-2), extending the nation's longest winning streak to 11 games.
Wallwork threw for three TDs in the first half, two going to Sexton.
Utah 21, Texas Christian 7
SALT LAKE CITY -- Chris Fuamatu-Ma'afala rushed for 182 yards and scored twice in the second half as No. 24 Utah defeated Texas Christian in the WAC.
Fuamatu-Ma'afala, a 275-pound sophomore, burst over right tackle and ran 70 yards with 4:37 left in the third quarter as Utah (6-1, 4-0 WAC) took a 14-7 lead over TCU (2-4, 1-2). Fuamatu-Ma'afala's 52-yard burst with 2:08 to play cinched it.
Washington 41, UCLA 21
SEATTLE -- Corey Dillon tied Hugh McElhenny's 46-year-old school record by scoring five touchdowns as No. 25 Washington beat UCLA in the Pac-10.
Dillon, a 225-pound junior tailback, scored on runs of 2, 1, 11, 5 and 1 yards to help the Huskies (4-2, 3-1) rebound from a 54-20 loss at Notre Dame last Saturday.
With starter Rashaan Shehee hobbled with a sprained ankle, Dillon had his third 100-yard rushing game of the season. He gained 145 yards on 33 carries, and also caught three passes for 53 yards.
McElhenny scored five times against Washington State in 1950.
The Bruins (2-4, 1-2) trailed, 28-0, at halftime.