From least upsetting to most upsetting in two insane days.

Saturday night was all right for upsets. Sunday was even better.

After the first round left 29 of 32 higher-seeded teams standing, the second has them falling out like drunks in a conga line.

Cha cha cha ... down goes Stanford.

Cha cha cha ... goodbye Temple.

What once looked like a by-the-numbers tournament has turned into throwing darts.

The NCAA Tournament has never seen such disarray in a weekend. Five of the top eight teams lost in the second round:

• Two No. 1 seeds are out.
• Three No. 2 seeds are out.
• Three No. 3 seeds are out.

Talk about bracket busting … that's eight of the top 12 teams entering the tournament heading home trying to figure out what went wrong.

It makes for an interesting Sweet 16, but it also assures at least one surprising entry will be included in the Final Four. The team that survives the West -- Wisconsin, Louisiana State, Purdue or Gonzaga -- will be an unusual invitee to the big card.

The tournament that started out with exciting games, but predictable results, has gone mad. … But the only surprising thing about that is that we're surprised.

Hall of a start

Seton Hall has four days to think about its Sweet 16 date with Oklahoma State, but the Pirates will have the rest of their lives to think about what they did to get there.

By going to overtime to beat Oregon (72-71) and Temple (67-65), the Hall became just the second team ever to go overtime in their first two games (Wake Forest in 1962 was the other).

If a tree falls twice on The Farm…

Stanford reached the Final Four two years ago as a No. 3 seed, and the past two years came in as a No. 2 and a No. 1 … and was ejected in the second round.

The Cardinal became the second top seed from the Pac-10 to lose their head (joining Arizona), falling to eighth-seeded North Carolina. Last year the second-seeded Cardinal lost to No. 10 Gonzaga.

Crazy Eights

The No. 8 seeding is one of the worst to get. It means that even if you get past a madder-than-hell No. 9 seed (at least the No. 9 gets to play the phony underdog card), you'll have to face the top seed in the second round.

But this year, the selection committee played a little joke on the No. 1 seeds, by placing traditional powers with uncharacteristically mediocre seasons in that eighth spot. North Carolina, Kansas and Utah each charged into the second round ready to prove that they're still, uh … North Carolina, Kansas and Utah.

As a result, No. 1 Stanford lost, No. 1 Duke needed a last-minute defensive miracle to win, and No. 1 Michigan State trailed at halftime before winning.

Then there is Wisconsin -- the kind of team that usually sits in such a spot. The Badgers and their preposterous defense disassociated No. 1 Arizona from the tournament.

In North Carolina and Wisconsin, the Sweet 16 welcomes two of these crazy eights for the first time since the ever -- at least since the NCAA started seeding teams in 1979.

Early exit

Kansas' loss to Duke makes it three straight years without a Sweet 16 appearance for the Jayhawks. That's the longest draught since the team missed it four consecutive years from 1982-85.

Stars of the Day

• Ty Shine, Seton Hall: Taking over for the injured Shaheen Holloway, the Pirates' sophomore backup point guard scored 26 points on 7-of-11 shooting from 3-point range -- including the 25-foot dagger with 18 seconds remaining to beat Temple.
• Darius Lane, Seton Hall: Yet another reason the future is so bright for Tommy Amaker's team; he came up with 16 points and 14 rebounds.
• Carlos Boozer, Duke: The freshman from Alaska scored 15 points and grabbed 13 rebounds, and his last-minute steal sealed the deal in the Blue Devils' victory over Kansas.
• Johnny Hemsley, Miami: He's had his troubles this season, but the senior shooter is hot at the right time; he followed his 20-point opener against Arkansas with a 24-point Sunday drive against Ohio State.
• Eric Coley, Tulsa: Scored 16 points and grabbed 16 rebounds as the Golden Hurricane proved they deserved a better seeding than seventh; they dispatched second-seeded Cincinnati, 69-61.

Power conferences rule the field

Heading into the Sweet 16, it's a three-conference race.

The Big East, Big Ten and SEC each have eight victories … and each have three teams still dancing, giving them more than half of the representation in the field.

On Sunday, the Big East roared with two upsets -- Seton Hall eliminated Atlantic 10 champ and second-seeded Temple; Miami sent Big Ten regular-season co-champ and third-seeded Ohio State home early. That gave the Big East the best overall record.

Here's a look at who's left: