Kansas was rewarded Monday with a No. 4 spot in the ESPN/USA Today coaches' poll, two days after beating then-No. 3 and longtime rival Missouri in their last regular-season meeting as Big 12 foes.
Kentucky and Syracuse remained 1-2, with the Wildcats garnering a unanimous vote as No. 1 for the sixth consecutive week. The Wildcats and Orange were also the top two teams in The Associated Press' Top 25 for a fifth straight week.
In the coaches' poll, Missouri, which also lost in its other game of the week (versus Kansas State), fell to No. 8.
The Jayhawks, previously fifth, overcame a 19-point, second-half deficit Saturday to beat the Tigers and punctuate the rivalry's 105-year history with a stunning capstone.
But it wasn't Kansas' first win over a top-three team this season.
The Jayhawks (24-5) beat a No. 2-ranked Ohio State team Dec. 10. They followed that big win with a loss to unranked Davidson in their next game a week later.
Kansas plays at unranked Oklahoma State on Monday (9 p.m. ET, ESPN), when it can win the outright Big 12 title.
With their win Saturday, the Jayhawks became one of eight teams all-time to win or share at least eight straight conference regular-season titles. Kansas owns the longest active streak, after Gonzaga's 11-year reign in the West Coast Conference ended this weekend.
Michigan State, unranked to start the season, entered the top five for the first time after wins over Minnesota and Nebraska. Duke (25-4) was No. 3.
The Spartans (24-5), who lost their first two games of the season -- to now-No. 6 North Carolina (25-4) and Duke -- close it out at home Sunday against Ohio State after playing at No. 20 Indiana on Tuesday (7 p.m., ESPN).
The Buckeyes (23-6) fell to 11th after a loss to Wisconsin, which remained No. 15. Ohio State trailed Marquette (24-5), Missouri (25-4), Murray State (28-1) and Baylor (24-5).
Georgetown was 12th, dropping four spots after a loss to Seton Hall. The Hoyas (21-6) were followed by Florida (22-7), Wichita State (26-4), Wisconsin (21-8), Michigan (21-8), UNLV (24-6), Louisville (22-7) and Notre Dame (20-9).
Saint Mary's (25-5), Florida State (19-9), San Diego State (22-6), Creighton (25-5) and Temple (22-6) rounded out the Top 25.
Kentucky (28-1) finishes its season with games at home against Georgia (Thursday at 9 p.m. ET, ESPN) and on the road versus Florida.
Syracuse (29-1) is off through Saturday, when it plays its finale against visiting Louisville.
Information from ESPN's Stats & Information group was used in this report.