It wasn't capped by a 25-yard field goal in overtime, but as "quality losses" go, North Carolina's was a good one.
Duke's didn't hurt much either.
Losses to the top-ranked and No. 2 teams in the nation cost the Blue Devils and Tar Heels each only one spot in this week's ESPN/USA Today coaches' poll, as they fell to No. 5 and No. 6, respectively, in the rankings released Monday.
Louisville vaulted the ACC powerhouse duo, coming in at No. 4 behind fellow undefeated teams Kentucky, Ohio State and Syracuse.
The top three teams also remained unchanged in The Associated Press' media poll.
Kentucky, which outlasted the Tar Heels 73-72 Saturday, received 19 of the 31 first-place votes, with the Buckeyes drawing 11 and the Orange getting one.
Ohio State handed the Blue Devils their first loss of the season Tuesday in Columbus, a rout that left Sports Illustrated Sportsman of the Year Duke coach Mike Krzyzewski saying, "Sometimes you just get your butt kicked."
Baylor, Xavier, Connecticut and Missouri rounded out the top 10.
At 24th, Harvard (8-0) made its first appearance ever in the Top 25 of the coaches' poll. The Crimson visit Connecticut on Thursday (7 p.m. ET, ESPN2).
Harvard also moved into the Associated Press poll, marking the first Ivy League team in that poll since Princeton on March 10, 1998. Other Ivy League teams to be part of the AP poll were Penn (Jan. 16, 1995), Columbia (Feb. 24, 1970), Dartmouth (Feb. 18, 1958), Cornell (Jan. 3, 1951) and Yale (March 8, 1949). Brown has never been in the AP rankings.
Wisconsin plunged nine spots to No. 16 after losses to North Carolina and Marquette.
The Golden Eagles advanced five places to No. 11. They were followed by Florida, Kansas, Pittsburgh and Alabama, in 15th.
The Jayhawks will get their second chance of the season to knock off the nation's No. 2 when they host the Buckeyes on Saturday (3:15 p.m. ET, ESPN2). Kansas lost to then-No. 2 Kentucky last month.
Creighton, Mississippi State, Michigan and Memphis made up the rest of the top 20.
Previously unranked Georgetown was No. 21, followed by Illinois and Gonzaga tied at 22nd, and Texas A&M at 25th.
Information from The Associated Press is included in this report.