Two games in Chicago on Tuesday will lead to changes, with Duke facing Michigan State and Kansas facing Kentucky in the Champions Classic.
Though no college hoops clash in November carries even remotely the same importance of a nonconference football contest in September, these games do matter.
Four things you need to know as the Blue Devils and Spartans battle in the 42nd all-time meeting between teams ranked Nos. -2, with No. 1 Duke winning a 1999 national semifinal. The Dookies would have to go 40-0.
Kentucky (2-0) dropped out of the top 5 after trailing Utah Valley by 12 in a season-opening win and holding off Vermont 73-69 in a pair of home games.
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The Blue Devils are more than really good. The No. 1 team has a 21-20 record in such games, and the average score is 75-75.
Merely consider the latest NBA Draft.net big board for next summer's draft.
"It's pretty awesome to be a part of two pretty historic moments for Coach", said senior Grayson Allen, a freshman on that Duke team three years ago.
All five. Potential first-rounders.
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But Michigan State also is really good thanks to the return of sophomore wing Miles Bridges, who would have been a lottery pick in the 2017 draft if he'd gone pro.
"I think they actually play better when there's pressure on them, probably because they're used to the spotlight after being so highly recruited and having so much attention on them in high school", he said.
As for the later game in Chicago, Kansas has one All-America candidate guard in Devonte Graham and a second candidate in Mississippi State transfer Malik Newman, who most expected already to be in the National Basketball Association.
This will be the seventh iteration of the Champions Classic, a two-game early season showcase event. On Friday, Duke beat Elon and then on Sunday they smoked Utah Valley.
That could be said of any of these four teams.
Arizona (2-0) lost two first-place votes despite opening its season with convincing wins over Northern Arizona and Maryland-Baltimore County. College Basketball is a big time grind, and the teams change quite a bit between now and the time they play in the NCAA Tournament.
"You can not play Popcorn State and learn anything", Kentucky coach John Calipari said after the Vermont game. "It's not the McDonald's game, even some of our guys have played for the US, but it won't be in that type of setting and against that level of team when they were younger".
The win is Krzyzewski's 1073rd overall, which is the most-ever for a coach in men's Division I college basketball history behind former Syracuse coach Jim Boeheim with 1,005 wins.