Louisville, which has slumped since being No. 1 two weeks ago, saw an 11-point second-half lead cut to 60-58 on Tray Woodall’s 3-pointer with 13.3 seconds remaining. That was one of seven 3s by Pitt over the final 13:18.
Dieng made two free throws with 12.7 seconds left for a four-point lead, and after the Panthers’ Lamar Patterson shot an air ball with 6 seconds left, Smith followed with two more free throws for a 64-58 lead.
Woodall, who had 14 points, hit a long 3-pointer as time expired.
Smith had 20 points for the Cardinals (17-4, 5-3 Big East).
Pittsburgh (17-5, 5-4) had its four-game winning streak stopped.
NO. 2 KANSAS 61, WEST VIRGINIA 56
In Morgantown, W.Va., Travis Releford had 19 points to lead Kansas to a win over West Virginia.
The Jayhawks have won 18 in a row.
NO. 25 MARQUETTE 63,
SOUTH FLORIDA 50
In Milwaukee, Vander Blue scored a career-high 30 points to lead Marquette (15-4, 6-1 Big East) to a victory over South Florida (10-10, 1-7).
The Golden Eagles moved into a first-place tie with Syracuse in the Big East.
AP POLL: Michigan is No. 1 in The Associated Press’ college basketball poll for the first time since its Fab Five days 20 years ago.
For the second consecutive week the No. 1 team lost. This time it was Duke, which was routed 90-63 by Miami in the third-worst defeat by a top-ranked team.
Michigan received 51 first-place votes from the 65-member national media panel Monday. Kansas moved up one spot to No. 2 and had 13 first-place votes. They are the only one-loss teams in the poll. Indiana, Florida, which drew the other first-place vote, and Duke complete the top five.