Several people have asked why I have Villanova No. 1.

My answer: The Wildcats have the nation's best resume, plain and simple. Villanova is 17-1 with four top-25 KenPom wins and six top-50 victories -- two of which came in true road games. None of the other obvious candidates for No. 1 -- i.e., UCLA, Kansas and Gonzaga -- can match that. And Villanova's lone loss is a single-digit loss on the road to a Butler team I have ranked ninth, which is comparable to UCLA's loss (at Oregon) and better than Kansas' loss (to Indiana).

So that's why Villanova is No. 1 in the Top 25 (and one).

And I imagine the Wildcats will stay there until/unless they lose again.

Biggest Movers
1 Villanova The Wildcats' resume features six top-50 KenPom wins and zero sub-15 losses. They're unlikely to be an underdog in any game the rest of the regular season. -- 18-7
2 UCLA The Bruins lone loss is last month's last-second 89-87 loss at Oregon. They're shooting 43.3 percent from 3-point range and have the nation's best effective field goal percentage. -- 22-10
3 Kansas The Jayhawks have won 16 straight since that season-opening loss to Indiana. Frank Mason is averaging 20.5 points, 5.5 assists and 4.4 rebounds in 35.2 minutes per game. -- 21-9
4 Kentucky The Wildcats have won four of their five SEC games by 20-plus points. They own non-league wins over North Carolina and Michigan State. -- 9-16
5 Gonzaga The Zags are undefeated and 3-0 against teams also ranked in the Top 25 (and one). They now have a 33.7-percent chance to enter the WCC Tournament with zero losses, according to KenPom. -- 31-1
6 West Virginia The Mountaineers forced Baylor into 29 turnovers during Tuesday's blowout of the Bears. West Virginia's two losses have come by a combined five points. -- 19-10
7 Baylor The Bears own a national-best seven top-50 KenPom victories. Their lone loss is last week's 89-68 loss at West Virginia. -- 28-2
8 Creighton The Bluejays' only loss is last month's 80-70 loss at home to Villanova. They rank second nationally in 2-point field goal percentage and fourth in 3-point field goal percentage. -- 22-9
9 Butler The Bulldogs' win over Xavier doubled as their sixth top-50 KenPom victory. Kelan Martin is averaging a team-high 16.6 points and 5.3 rebounds. -- 10-15
10 Notre Dame The Irish have five top-50 KenPom wins and zero sub-20 losses. They just won back-to-back road games at Miami and Virginia Tech. -- 11-15
11 N. Carolina UNC snapped Florida State's 12-game winning streak Saturday. It was the Tar Heels fifth top-50 KenPom win and fourth straight victory in general. -- 18-11
12 Florida St. The Seminoles are 3-1 against currently ranked Top 25 (and one) teams. They've beaten Virginia, Florida and Duke while losing at North Carolina. -- 18-7
13 Virginia The Cavaliers have won two straight since losing at Pitt in OT. Their resume features three top-50 KenPom wins, including a 61-53 victory at Louisville. -- 18-7
14 Louisville The Cardinals own victories over Kentucky and Duke. Their three losses have all come to schools currently ranked ahead of them in the Top 25 (and one). -- 13-7
15 Duke The Blue Devils have three top-50 KenPom wins and zero sub-50 losses. They're 1-2 since Mike Krzyzewski stepped away to recover from back surgery. -- 13-11
16 Arizona Lauri Markkanen finished with a career-high 30 points and eight rebounds in Thursday's win over Arizona State. The Wildcats have won 10 straight games since losing to Gonzaga. -- 17-9
17 Florida The Gators needed OT to get past Georgia on Saturday. They've won seven straight games since losing at Florida State. -- 15-10
18 Oregon The Ducks will take a 14-game winning streak into Thursday's game with California. They're tied with Arizona atop the Pac-12 standings. -- 21-7
19 Wisconsin The Badgers have won 10 of their past 11 games and are on track to win the Big Ten title outright, according to KenPom. Ethan Happ is averaging 12.9 points and 9.2 rebounds. -- 18-13
20 Cincinnati The Bearcats held East Carolina to 15 field goals and a shooting percentage of 25.4 in Sunday's 55-46 win. Cincinnati will take an eight-game winning streak into Wednesday's game with Temple. -- 12-11
21 Xavier The Musketeers are 0-3 against other Top 25 (and one) teams. They'll take a two-game losing streak into Monday's game with Creighton. -- 13-8
22 Purdue The Boilermakers are 2-2 in their past four games with losses to Minnesota at home and Iowa on the road. They're 4-4 against top-70 KenPom teams so far this season. -- 18-10
23 South Carolina The Gamecocks have won four straight since losing at Memphis. They're still undefeated this season with Sindarius Thornwell in the lineup. -- 6-15
24 Saint Mary's The Gaels suffered a blowout late Saturday at Gonzaga. A November victory over Dayton continues to be their lone top-50 KenPom win. -- 14-10
25 TCU The Horned Frogs' resume features two top-50 KenPom wins and zero sub-25 losses. They've beaten Texas and Iowa State on this two-game winning streak. -- 12-14
26 Iowa St. Four of Iowa State's five losses are to teams that are also ranked in the Top 25 (and one). The only exception is last month's loss at Iowa. -- 2-22