Here's my updated bracket projections through games played 12/26/21:
1 Seeds: BAYLOR, ARIZONA, LSU, PURDUE
2 Seeds: Kansas, DUKE, Auburn, Michigan St
3 Seeds: GONZAGA, USC, UCLA, HOUSTON
4 Seeds: Tennessee, Ohio St, Alabama, Xavier
5 Seeds: VILLANOVA, COLORADO ST, Seton Hall, Wisconsin
6 Seeds: Connecticut, Illinois, LOYOLA CHICAGO, West Virginia
7 Seeds: Iowa St, Kentucky, Providence, Texas
8 Seeds: North Carolina, BYU, Texas Tech, San Francisco
9 Seeds: Iowa, Oklahoma, Minnesota, BELMONT
10 Seeds: Michigan, Indiana, Wake Forest, Saint Mary's
11 Seeds: DAVIDSON, Virginia Tech, Florida, TCU
12 Seeds: San Diego St, Murray St, Mississippi St, Creighton, IONA, CHATTANOOGA
13 Seeds: WAGNER, UAB, OAKLAND, TOLEDO
14 Seeds: TOWSON, UTAH VALLEY, SOUTH DAKOTA ST, TEXAS ST
15 Seeds: NAVY, VERMONT, UC IRVINE, PRINCETON
16 Seeds: SOUTHERN UTAH, LIBERTY, CAMPBELL, TEXAS SOUTHERN, NICHOLLS ST, HOWARD
Last 4 Byes:
Saint Mary's
Virginia Tech
Florida
TCU
Last 4 In:
San Diego St
Murray St
Mississippi St
Creighton
First 4 Out:
UCF
DePaul
Memphis
Clemson
Next 4 Out:
Wyoming
Northwestern
Arkansas
Utah St