LINCOLN, Neb. — Jordan Canzeri broke long touchdown runs on back-to-back series in the third quarter, and No. 3 Iowa completed its first perfect regular season in 93 years with a 28-20 victory over Nebraska on Friday.

The Hawkeyes (12-0, 8-0, No. 4 CFP) were far from dominant but good enough against the sloppy Cornhuskers (5-7, 3-5) on a raw afternoon. As one of two remaining unbeaten teams, they’ll head to the Big Ten championship game next seek in the middle of the College Football Playoff race.

Canzeri ran off left tackle two straight times for two touchdowns, the first one going 29 yards and the second 68 yards for a 28-17 lead. Canzeri finished with 140 yards on 17 carries.

Iowa picked four of Tommy Armstrong Jr.’s passes, with defensive end Parker Hesse returning one 4 yards for the Hawkeyes’ fourth interception for a touchdown this season.

The Huskers needed a win to assure bowl eligibility.

NO. 21 HOUSTON 52, NO. 16 NAVY 31: In Houston, Greg Ward, Jr. threw for 308 yards and three touchdowns and Houston beat Navy to reach the first American Athletic Conference championship game.

Houston (11-1, 7-1 American) won the West Division title and will host either Temple or South Florida in the championship game Dec. 5. The Cougars are also well positioned to earn a bid to a New Year’s Six bowl game, likely the Fiesta Bowl, if they win the league title.

Ward was 26-of-35 passing and ran for 83 yards and another score. Brandon Wilson, who was moved from cornerback to running back this week because of injuries, ran for 111 yards and two touchdowns on 22 carries. Demarcus Ayers had eight catches for 161 yards and a touchdown and threw a touchdown pass.

Keenan Reynolds rushed for 84 yards on 19 carries and a fourth quarter touchdown and was 14 of 17 for 312 yards passing and a touchdown for Navy (9-2, 7-1). He scored his 83rd career touchdown to match the FBS record set by Wisconsin’s Montee Ball. Reynolds also set a Navy record with his 29th career TD pass. Navy had its five-game win streak snapped.

NO. 18 OREGON 52, OREGON STATE 42: In Eugene, Oregon, Vernon Adams threw for 366 yards and three touchdowns and Oregon extended its winning streak to six games and closed out the regular season with a victory over Oregon State.

Royce Freeman ran for 167 yards and two touchdowns for the Ducks (9-3, 7-2 Pac-12), who will now wait to see how the postseason bowl picture shakes out. Stanford will represent the Pac-12 North in the conference title game.

Bralon Addison caught eight passes for 106 yards and scored four touchdowns for Oregon, including a 13-yard TD run.

It was the ninth straight loss for the Beavers (2-10, 0-9), the most since 1995 when they lost 10 in a row. Oregon State did not win a conference game for the first time since 1997.

WASHINGTON 45, NO. 20 WASHINGTON STATE 10: In Seattle, Myles Gaskin ran for 138 yards and two touchdowns, Sidney Jones, Darren Gardenhire and Azeem Victor returned turnovers for touchdowns in the second half and Washington became bowl eligible with a victory over Washington State.

The Huskies (6-6, 4-5 Pac-12) removed any doubt about their postseason status by stemming the best passing game in the country and taking advantage of seven turnovers by the Cougars, the most by Washington State since 2009 against Hawaii.

Peyton Bender made his first college start for Washington State because of an injury to Luke Falk and looked the part of an inexperienced freshman. Bender threw for 288 yards, but the Cougars (8-4, 6-3) failed to take advantage of three good scoring opportunities in the first half. Bender started after Falk suffered an apparent concussion last week .

Jones returned an interception 69 yards for a touchdown in the third quarter, and Gardenhire scooped up a fumble and returned it 28 yards for a touchdown in the fourth quarter. On the next play from scrimmage after Gardenhire’s TD, Victor nabbed Bender’s pass and returned it 27 yards for another score.

WESTERN MICHIGAN 35, NO. 24 TOLEDO 30: In Toledo, Ohio, Corey Davis caught two touchdown passes and Western Michigan upset Toledo to send Northern Illinois to the Mid-American Conference championship game.

The Rockets (9-2, 6-2) could have earned the MAC West title and a spot in the league title game, but the Broncos (7-5, 6-2) created a three-way tie for the division. NIU beat both Toledo and Western Michigan and will face Bowling Green on Dec. 4 at Ford Field in Detroit.

The game turned when Toledo’s Alonzo Russell fumbled a punt to set up Davis’ second touchdown, a 30-yard catch from Zach Terrell with 1:07 to play in the first half that gave the Broncos a 25-21 lead.