Baton Rouge, La. - LSU (43-16)
Chapel Hill, N.C. - North Carolina (44-14)
Charlottesville, Va. - Virginia (38-17)
College Station, Texas - Texas A&M (42-16)
Columbia, S.C. - South Carolina (40-17)
Coral Gables, Fla. - Miami (Fla.) (36-21)
Eugene, Ore. - Oregon (42-16)
Gainesville, Fla. - Florida (42-18)
Gary, Ind. - Purdue (44-12)
Houston, Texas - Rice (40-17)
Los Angeles, Calif. - UCLA (41-14)
Palo Alto, Calif. - Stanford (37-16)
Raleigh, N.C. - North Carolina State (39-17)
Tallahassee, Fla. - Florida State (43-15)
Tucson, Ariz. - Arizona (37-17)
Waco, Texas - Baylor (44-14)

Of the 16 regional hosts, 14 did not win their tournaments. The PAC12 does not have a tournament so UCLA is the regular season champion.

Now, add in an Indy and the GW winner, 29 tourney winners and 9 others in the top 25 that did not take their tourney. That's 56; leaving 8 spots open.

This is just me making an attempt to see how many at large spots would remain for bubble teams. Someone correct my errant figuring as I've never done this before