From Most Likely to Least Likely:

Kansas, Syracuse, Wisconsin, Villanova:  Combined Seed (8), Combined RPI (38) - two from one conference and one team from last year's Final 4

Kansas, Kansas State, Wisconsin, Duke:  Combined Seed (8), Combined RPI (31) - two from one conference

Kansas, Syracuse, Wisconsin, Baylor: Combined Seed (9), Combined RPI (36)

Kansas, Syracuse, WVU, Duke:  Combined Seed (5), Combined RPI (13)