AMES, Iowa — Georges Niang scored 22, Monte Morris added 20 and No. 19 Iowa State beat top-ranked Oklahoma 82-77 Monday night, its first win over a No. 1 team since toppling Wilt Chamberlain's Kansas Jayhawks in 1957.
Morris had a jumper, a key rebound and two free throws in the final 21 seconds for the Cyclones (14-4, 3-3 Big 12), who were actually slight favorites at home.
It was the third time a No. 1 team lost in the state of Iowa this season: Northern Iowa beat North Carolina, and Iowa beat Michigan State.
Isaiah Cousins hit a 3 with 41 seconds left to tie it at 75 for OU, which moved to No. 1 in the Associated Press poll earlier in the day. But Morris drilled a step-back jumper for the lead, and Abdel Nader's free throws with 3.1 seconds left put it out of reach.
Buddy Hield scored 27 and Cousins 26 for the Sooners (15-2, 4-2), who could make a case for retaining the top spot with a win Saturday at No. 13 Baylor.
SYRACUSE 64, NO. 20 DUKE 62: Tyler Roberson had 14 points and a career-high 20 rebounds, and the visiting Orange (13-7, 3-4 ACC) handed the Blue Devils (14-5, 3-3) their third straight loss.
Marshall Plumlee had 19 points and 17 rebounds to lead Duke, which has its longest losing skid since the 2006-07 team dropped its final four games.
Duke had two chances in the final minute to take the lead after Plumlee made it 63-62 with 31.3 seconds left. Gbinije missed the front end of a one-and-one with 29.1 seconds left, and after the Orange burned three fouls to give, Grayson Allen missed a flip shot with about seven seconds left and Roberson tapped the rebound out to Richardson.
Richardson made a free throw with 2.1 seconds left. Matt Jones rebounded the miss, took off down court and appeared to draw contact near midcourt, but no foul was called as the buzzer sounded.
That helped Boeheim claim the latest matchup of the winningest active men's coaches in Division I. He and longtime friend Mike Krzyzewski have combined for 1,906 victories.
NO. 22 PURDUE 107, RUTGERS 57: Freshman Caleb Swanigan had 12 points and 13 rebounds, and the Boilermakers (16-3, 4-2 Big Ten) had a 63-23 rebounding advantage while handing the Scarlet Knights' their worst home loss. Rutgers' previous worst loss at home was 111-69 to Lafayette on March 3, 1955.
REF TRIP: Oregon State forward Jarmal Reid was suspended at least four games a day after sticking out his leg and tripping a referee in a loss against Utah. After coach Wayne Tinkle announced the suspension, which was affirmed by the Pac-12 Conference, Reid apologized. Tinkle said Reid's conduct over the next two weeks will determine if additional discipline will be taken.
AP POLL: Oklahoma was a unanimous No. 1, topping the poll for the first time since the final two weeks of the 1989-90 season. No. 21 USC and No. 25 Indiana entered, and Pittsburgh and Gonzaga fell out.
NO. 3 N. DAME 79, NO. 18 TENN. 66: Brianna Turner and Arike Ogunbowale scored 14 each for the host Irish (17-1), which got 24 points off turnovers to beat the Volunteers (11-6) for the sixth straight time after losing the first 20 games in the series.
NO. 10 MISS. ST. 79, OLE MISS 51: Morgan William had 16 points, Chinwe Okorie added 14 and the host Bulldogs (17-2, 4-1 SEC) bounced back from Thursday's road loss to Missouri to win for the 12th time in 13 games.
AP POLL: USF climbed four spots to a program-best 15th as four Sunshine State teams remained in the Top 25. FSU rose two spots to No. 14 and Miami five spots to No. 16, while Florida dropped two spots to No. 22. Duke fell out of the poll after 312 straight weeks. USC also fell out, and No. 24 DePaul and No. 25 West Virginia entered.