Oregon opened the regular season with a 13-game winning streak. The Ducks closed it with seven straight victories.
Reserve guard Jason Calliste made the go-ahead jumper and free throw with 4:22 left and finished with 18 points in a 64-57 win over No. 3 Arizona on Saturday in Eugene, Ore.
"We can be one of the best teams in the country," Calliste said. "Doesn't matter who we're playing. Doesn't matter what the name on the chest says."
Johnathan Loyd added 16 points for the Ducks (22-8, 10-8 Pac-12) who greatly improved their chances of a bid in the NCAA tournament. Last season, Oregon won the conference tournament and advanced to the NCAA regional semifinals.
Aaron Gordon had 21 points for the Wildcats (28-3, 15-3), who already had clinched the Pac-12 regular-season title.
Wichita State 67, Missouri State 42: Cleanthony Early scored 20 points, and the No. 2 Shockers (33-0) used 17-0 and 24-0 runs to rout the Bears (20-12) in the Missouri Valley Conference semifinals in St. Louis. Wichita State faces Indiana State (23-9) in the MVC final Sunday as it seeks to match UNLV's record 34-0 start in 1990-91.
Florida 84, Kentucky 65: Patric Young scored 18 points, and the No. 1 Gators (29-2) routed the No. 25 Wildcats (22-9, 12-6) in Gainesville, Fla., becoming the first team in Southeastern Conference history to go 18-0 in league play.
Duke 93, North Carolina 81: Freshman Jabari Parker had a season-high 30 points and 11 rebounds to lead the No. 4 Blue Devils (24-7, 13-5 Atlantic Coast Conference) past the No. 14 Tar Heels (23-8, 13-5) in Durham, N.C.
West Virginia 92, Kansas 86: Eron Harris scored 28 points, Juwan Staten added 24, and the host Mountaineers (17-14, 9-9 Big 12) withstood 41 points by freshman Andrew Wiggins to beat the No. 8 Jayhawks (23-8, 14-4).
Creighton 88, Providence 73: Doug McDermott scored a career-high 45 points and became the eighth player in Division I history to go over 3,000 for a career, and the No. 13 Bluejays (24-6, 14-4 Big East) beat the visiting Friars (20-11, 10-8).
Louisville 81, Connecticut 48: Montrezl Harrell scored 20 points, and the No. 11 Cardinals claimed a share of the American Athletic Conference championship with a rout of the visiting Huskies.
Louisville (26-5, 15-3) finish tied with No. 15 Cincinnati atop the league standings. A coin flip gave Cincinnati the top seed in the AAC tournament.
Oregon State 78, Arizona State 76: Roberto Nelson scored six of his 15 points in overtime to help the host Beavers (16-14, 8-10 Pac-12) beat the Sun Devils (21-10, 10-8).
Fresno State 69, San Jose State 56: The Spartans (7-23, 1-17 Mountain West) scored only 13 points in the first half and lost to the Bulldogs (16-15, 9-9) at the Event Center. Rashad Muhammad scored 17 points to lead San Jose State, which trailed 35-13 at the half. Jaleel Williams added 12 points for SJSU, and Chris Cunningham had 10.
NCAA bids: Eastern Kentucky (24-9) became the second team to qualify for the NCAA tournament when it upset top-seeded Belmont 79-73 for the Ohio Valley Conference championship. Harvard (26-4) clinched an NCAA bid Friday when it wrapped up the Ivy League title.
Connecticut 72, Cincinnati 42: Breanna Stewart scored 22 points to lead the No. 1 Huskies (32-0) to a rout of the Bearcats (13-18) in the quarterfinals of the American Athletic Conference tournament in Uncasville, Conn.
Notre Dame 83, North Carolina State 48: Jewell Loyd had 16 points to help the No. 2 Fighting Irish (31-0) beat the No. 14 Wolfpack (25-7) to advance to the ACC title game in Greensboro, N.C. Notre Dame faces No. 10 Duke (27-5) in Sunday's final.
Kentucky 68, South Carolina 58: Bria Goss scored 14 points and the No. 12 Wildcats (24-7) defeated the No. 5 Gamecocks (27-4) to reach the SEC tournament final in Duluth, Ga. Kentucky will meet No. 6 Tennessee (26-5) on Sunday.