MADISON, Wis. - Joe Paterno was his feisty old self, arguing with officials and brushing off a television interview just before halftime.
But the 79-year-old coaching icon had to leave the sideline after hurting his knee in the second half of Penn State's game at No. 17 Wisconsin on Saturday, and his team couldn't stand up to the Badgers in a 13-3 loss.
"It was sad to watch," said Penn State defensive coordinator Tom Bradley, who took over for Paterno. "But he'll probably be back chasing officials next Saturday."
The 79-year-old Paterno stood with his hands on his knees for several minutes after freshman tight end Andrew Quarless rolled into him after catching a sideline pass.
Paterno was carted to the locker room near the end of the third quarter.
A Penn State spokesman said Paterno had a knee injury and was flying back to State College, Pa., with a member of the school's medical staff ahead of the rest of the team. He was expected to be X-rayed on Saturday evening and could undergo an MRI today or Monday.
Wisconsin (9-1, 6-1 Big Ten) scored the first touchdown given up by Penn State's defense in more than two games. Penn State (6-4, 4-3) squandered the few scoring chances it had.
NO. 24 OREGON 34, WASHINGTON 14
In Eugene, Ore., Jonathan Stewart ran for 159 yards and two touchdowns as Oregon rolled up 316 yards on the ground.
Patrick Chung opened the scoring with a 59-yard punt return for a touchdown and had an interception for Oregon (7-2, 4-2).
Dennis Dixon completed 14 of 25 passes for 109 yards for the Ducks, but the Huskies (4-6, 2-5) capitalized on his two interceptions for their only scores.
Dixon has not thrown for more than 150 yards in four straight weeks.
ARIZONA 27, NO. 25 WASHINGTON STATE 17
In Pullman, Wash., Chris Henry ran for 94 yards and two touchdowns on a school-record 35 carries and Arizona limited Washington State to 45 yards rushing in the Wildcats' victory.
Arizona (4-5, 2-4 Pac-10) entered the game last in the conference, averaging 71.4 yards rushing per game. But Henry and Mike Thomas kept the ground game going at critical moments to give Arizona 116 yards rushing.
Arizona quarterback Willie Tuitama returned after missing two games because of a concussion, completing 10-of-17 for 159 yards and a touchdown, with an interception.