In order of most sure:
Uconn(9) over Colorado - Uconn is hot, I think they can take down Kansas. They roll past Colorado.
Providence(9) over USC - Two great guards. That always means something in the tournament. Like Uconn, they could take down UNC.
WSU(11) over Zona - Shockers are my sleeper pick. I think they could go back to a F4. half their losses came in November, and three of those without VanVleet. They are much better than their record/seeding shows. Arizona is similar to Vandy, but WSU won't be so cold to start.
VCU(10) over Oregon St - Oregon St is without one of their better players for this week. and they have 12 losses. I like how VCU still plays even without Smart.
Nooga(12) over Hoosiers - Not much on this. More or less what I;ve heard from everyone. A 5 loss season, even for a mid-major, is nothing to scoff at. If there's anything to this JBJ rumor, that could weigh on the team. He also has his own issues. Could he mail it in?
Michigan(11) over Irish - Irish seem very hot and cold. Michigan *could* be coming off a win, and starting the tournament with the leg-up. SImilar to WSU pick.
Hawaii(13) over Cal - That coaching shakeup could loom over the team. Brown and Rabb have underachieved. I'm not entirely sure they wouldn't rather get started on their NBA careers than have to travel around the US for the tournament..
UNCW(13) over Duke - UNCW plays a style that could really disrupt Duke's crappy Pointguards. Duke can not sustain an injury, fouls, or fatigue... This could happen.
Iona(13) over ISU - Tim Cluess has had this team rolling for the last 3 years. They play hard defense and with lots of energy. It won't be long before Cluess finds himself coaching in a power conference.
That's about it.