Florida Gators (30-2, 18-0 SEC, AP rank No. 1, RPI 2, SOS 25)
What they've done: The Gators finished with a perfect conference record, haven't lost since early December and walloped Kentucky by 19 in their regular-season finale. Then they edged the Wildcats to win the SEC tournament title. They lost to only Wisconsin and Connecticut and have three wins against RPI top-25 teams. What they need to do: Get to the airport on time. Florida has punched its ticket as a No. 1 seed and after winning the SEC tournament, the Gators are the favorite for the NCAA's overall top seed.
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Arizona Wildcats (30-3, 15-3 Pac-12, AP rank No. 4, RPI 1, SOS 8)
What they've done: All three of the Wildcats' losses this season came in the weak Pac-12, including a surprising defeat against Oregon last weekend, but they've got the nation's best RPI and a good strength of schedule, bolstered by four wins against RPI top-25 foes. What they need to do: Like Florida, Arizona is essentially locked in as a No. 1 seed. Despite losing in the Pac-12 tournament final, it doesn't really matter. With nonconference wins over Duke, Michigan and San Diego State, their body of work is worthy of a top seed.
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Wichita State Shockers (34-0, 18-0 MVC, AP rank No. 2, RPI 5, SOS 105)
What they've done: What have they done? Only beat everyone on their schedule and enter the NCAA tournament as the first undefeated team since UNLV in 1991. Of course, everyone on their schedule is not exactly saying much, as Shockers detractors will point out. The Missouri Valley Conference regular-season and tournament champion beat the only RPI top-25 team it played (Saint Louis) and also has wins over top-50 middleweights Brigham Young and Tennessee. What they need to do: Wait and hope the NCAA tournament selection committee rewards their unblemished record and remembers their run to the Final Four last year, which would seem to demonstrate the Shockers' legitimacy against top competition. Wichita State has done literally everything it's capable of -- by winning every game it played -- to earn a No. 1 seed.
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Kansas Jayhawks (24-9, 14-4 Big 12, AP rank No. 10, RPI 3, SOS 1)
What they've done: The young Jayhawks have played the hardest schedule in the country and ridden their pro-level talent to six wins (against three losses) over RPI top-25 teams, including a victory against Duke. But a loss to West Virginia last weekend and an early exit from the Big 12 tournament hurt. The question is if and how much the NCAA tournament selection committee will take into account the injury to star freshman center Joel Embiid in its considerations of Kansas as a No. 1 seed. What they need to do: With the Jayhawks falling short of the conference championship, their nine losses probably keep them from being among the top four. Certainly, Andrew Wiggins and Co. are a lock for at least a No. 2 seed.
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Duke Blue Devils (25-7, 13-5 ACC, AP rank No. 7, RPI 7, SOS 6)
What they've done: They've been Duke. The Blue Devils played a difficult schedule and won most of their games. They split the eight games they played against RPI top-25 teams, with wins over the likes of Michigan and Syracuse and losses to Kansas and Arizona, among others. Duke followed up a bewildering loss to Wake Forest in the penultimate regular-season conference game with a big win over North Carolina in the finale. What they need to do: Despite losing the conference tourney title to Virginia, Duke has a solid resume that probably guarantees it a No. 2 seed at the worst.
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Michigan Wolverines (24-7, 15-3 Big Ten, AP rank No. 8, RPI 10, SOS 9)
What they've done: The Wolverines won a very strong Big Ten, their first outright regular-season championship since 1986. They also went 2-4 against RPI top-25 teams. So they won the games they were supposed to and only really lost to very good opponents, including Duke and Arizona. That's nothing to shake a stick at. What they need to do: Michigan entered the conference tourney on a five-game winning streak and, despite losing to MSU in the Big Ten tournament final, given its regular-season supremacy, it should still be in line for a No. 2 seed.
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Villanova Wildcats (28-4, 16-2 Big East, AP rank No. 3, RPI 4, SOS 44)
What they've done: They won the new-look (and significantly less potent) Big East and even got a November win over Kansas. Then the Wildcats lost a stunner to Seton Hall in the quarterfinals of the Big East tournament and cost itself a No. 1 seed. An unimpressive strength of schedule and a 1-3 record against RPI top-25 teams, including two losses to Creighton, also don't help. What they need to do: Sit, wait and cross their fingers. The Wildcats' dominance of the diluted Big East doesn't do much given their immediate loss in the conference tournament. Nova is still probably deserving of a high seed based on its regular-season body of work, and three losses don't typically earn a team something below a No. 2.
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Creighton Bluejays (26-6, 14-4 Big East, AP rank No. 14, RPI 8, SOS 15)
What they've done: The Bluejays have ridden Doug McDermott and his 3-point-shooting pals further than most people thought. Creighton has been Villanova's kryptonite, winning both games by a combined 49 points. Other than that, though, the Bluejays haven't really played anyone, losing their only other game to an RPI top-25 team (San Diego State). Two losses in their last their last three regular-season games will also give the selection committee pause. What they need to do: Losing the Big East tournament championship probably costs them a No. 2, given their scant resume against top competition.
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Syracuse Orange (27-5, 14-4 ACC, AP rank No. 11, RPI 9, SOS 70)
What they've done: Crashed and burned lately. Four losses in the Orange's last six regular-season games, including at home to Georgia Tech on March 4, knocked them from the top ranking in the country and has almost certainly cost them a No. 1 seed. The move from the Big East to the stronger ACC proved to be as difficult as expected, with Syracuse's four losses all coming in-conference. Then, the Orange went out and lost in the ACC quarterfinals to NC State. What they need to do: Before Syracuse's late-season collapse -- to say nothing of coach Jim Boeheim's personal meltdown against Duke -- it had built a resume worthy of a top seed. But now that the Orange got upended by NC State, a No. 2 seed may be the best Syracuse can hope for. It could be looking at a No. 3 or even (gasp) 4 seed.