This is going to be a strange postseason, there is almost a guarantee of at least a couple of super regionals (and possibly a regional) being hosted by a team that is not playing.
Regionals and Super Regionals
Texas
Louisville
East Carolina
Texas Tech
South Carolina
TCU
Oregon
Arizona*
Regionals
Notre Dame*
Oklahoma State
Louisiana Tech*
Florida
Stanford
Virginia Tech*
Michigan
Florida State*
* - Hosting as a 2 seed.
Tennessee likely to Virginia Tech
Vanderbilt likely to Notre Dame
MSU/Ole Miss winner to Florida State, loser to Arizona
Arkansas to La. Tech.
Regionals and Super Regionals
Texas
Louisville
East Carolina
Texas Tech
South Carolina
TCU
Oregon
Arizona*
Regionals
Notre Dame*
Oklahoma State
Louisiana Tech*
Florida
Stanford
Virginia Tech*
Michigan
Florida State*
* - Hosting as a 2 seed.
Tennessee likely to Virginia Tech
Vanderbilt likely to Notre Dame
MSU/Ole Miss winner to Florida State, loser to Arizona
Arkansas to La. Tech.