Xavier, Kansas, Villanova, and Virginia are the No. 1 seeds in the 2018 NCAA Tournament, which revealed its full bracket Sunday on TBS. The 68-team field is full of surprises as always, so there will surely be a lot to discuss before the First Four games begin in a couple days.

TBS, which broadcast the show for the first time, changed the format a bit this year. The full field of 68 teams was revealed alphabetically at the beginning of the program, then we got to find out who was playing who and what the bracket actually looked like.

The selection committee brought some surprises as usual, so there will surely be some fan bases from bubble teams disappointed by the decisions. Louisville, Saint Mary’s, Notre Dame, and USC are among the teams that were left out of the mix.

Virginia is the No. 1 overall seed for the tournament, while Texas Southern is the No. 68 overall seed.

The 2018 NCAA Tournament begins Tuesday with the First Four games. The first round begins Thursday, and the Final Four is set for March 31 at the Alamodome in San Antonio. The final two teams will play in the national championship game on April 2.

2018 NCAA Tournament bracket

West Region

No. 1 Xavier vs. No. 16 NC Central/Texas Southern
No. 8 Missouri vs. No. 9 Florida State
No. 5 Ohio State vs. No. 12 South Dakota State
No. 4 Gonzaga vs. No. 13 UNC Greensboro
No. 6 Houston vs. No. 11 San Diego State
No. 3 Michigan vs. No. 14 Montana
No. 7 Texas A&M vs. No. 10 Providence
No. 2 North Carolina vs. No. 15 Lipscomb

Midwest Region

No. 1 Kansas vs. No. 16 Penn
No. 8 Seton Hall vs. No. 9 NC State
No. 5 Clemson vs. No. 12 New Mexico State
No. 4 Auburn vs. No. 13 Charleston
No. 6 TCU vs. No. 11 Arizona State/Syracuse
No. 3 Michigan State vs. No. 14 Bucknell
No. 7 Rhode Island vs. No. 10 Oklahoma
No. 2 Duke vs. No. 15 Iona

East Region

No. 1 Villanova vs. No. 16 LIU Brooklyn/Radford
No. 8 Virginia Tech vs. No. 9 Alabama
No. 5 West Virginia vs. No. 12 Murray State
No. 4 Wichita State vs. No. 13 Marshall
No. 6 Florida vs. No. 11 St. Bonaventure/UCLA
No. 3 Texas Tech vs. No. 14 Stephen F. Austin
No. 7 Arkansas vs. No. 10 Butler
No. 2 Purdue vs. No. 15 Cal State Fullerton

South Region

No. 1 Virginia vs. No. 16 UMBC
No. 8 Creighton vs. No. 9 Kansas State
No. 5 Kentucky vs. No. 12 Davidson
No. 4 Arizona vs. No. 13 Buffalo
No. 6 Miami (FL) vs. No. 11 Loyola
No. 3 Tennessee vs. No. 14 Wright State
No. 7 Nevada vs. No. 10 Texas
No. 2 Cincinnati vs. No. 15 Georgia State

2018 NCAA Tournament field

At-large bids

Alabama
Arizona State
Arkansas
Auburn
Butler
Clemson
Creighton
Duke
Florida
Florida State
Houston
Kansas State
Miami (Fla.)
Michigan State
Missouri
NC State
Nevada
North Carolina
Ohio State
Oklahoma
Providence
Purdue
Rhode Island
Seton Hall
St. Bonaventure
Syracuse
TCU
Tennessee
Texas
Texas A&M
Texas Tech
UCLA
Virginia Tech
West Virginia
Wichita State
Xavier

Automatic bids

Arizona
Bucknell
Buffalo
Cal State Fullerton
Charleston
Cincinnati
Davidson
Georgia State
Gonzaga
Iona
Kansas
Kentucky
Lipscomb
LIU Brooklyn
Loyola-Chicago
Marshall
Michigan
Montana
Murray State
New Mexico State
North Carolina Central
Penn
Radford
San Diego State
South Dakota State
Stephen F. Austin
Texas Southern
UMBC
UNC Greensboro
Villanova
Virginia
Wright State

How to watch Selection Sunday

Time: 5 p.m. CT

TV: TBS

Live stream: NCAA.com