1 This is the marquee region, without question. North Carolina, Kentucky and UCLA are seeded 1-2-3. They also are the top three teams in all-time Final Four appearances: North Carolina has 19, and Kentucky and UCLA have 17 each. The three schools have combined for 25 national titles.
2 The region's next tier, in terms of name recognition, isn't too shabby, either. Arkansas reached back-to-back NCAA title games in 1994 and '95. Butler did the same in 2010 and '11. Seton Hall was the NCAA runner-up in 1989. Wichita State went to the Final Four in 2013. The Gophers went in 1997 (since vacated). Cincinnati has five Sweet 16 appearances since 1992.
3 A Wichita State-Kentucky rematch? Too bad it would come in the second round. Three years after a classic game in the round of 32, Wichita State could be poised for revenge. Analyst Ken Pomeroy rates the 10th-seeded Shockers as the nation's eighth-best team.
4 This is the second consecutive No. 1 seed for the Tar Heels, who lost to Villanova in last year's championship game on Kris Jenkins' last-second three-pointer.
5 North Carolina has the most losses of any No. 1 seed (seven) in the tournament. The three other top seeds — Villanova, Kansas and Gonzaga — combined for eight losses. But the ACC sent nine teams to the NCAA tournament, and North Carolina won that league's regular-season title by two games.
6 Danny Manning earned a permanent place in March Madness lore when he led a sixth-seeded Kansas team to the national title in 1988 — which included a win against instate rival Kansas State in the Elite Eight. He will see the Wildcats again as Wake Forest's coach in a play-in game matchup Tuesday, with the winner facing No. 6 seed Cincinnati.
7 Second-seeded Kentucky (29-5) won the SEC regular-season and tournament titles. The Wildcats — who open with Northern Kentucky — have a potential Sweet 16 matchup with third-seeded UCLA (29-4), which beat the Wildcats in December to end their 42-game winning streak at Rupp Arena. Lonzo Ball scored 47 points in the Bruins' win.
8 UCLA is the region's popular upset pick, partly because the Bruins are so fun to watch. Ball, a freshman guard, is a passing artist who hits 41 percent of his threes and he's surrounded by talent. UCLA returns to the tournament after a one-year absence. The Bruins (29-4) have won nine of their past 10 but fell flat against Arizona in the Pac-12 tournament semifinals. Coach Steve Alford said Ball has been playing despite an injured thumb.