The NCAA Tournament selection committee has revealed the 68-team field for this year's March Madness festivities set to begin later this week, and there's already odds on every First Four and (almost) every First Round game courtesy of William Hill Sportsbook. So whether you're looking to throw down some cheddar or simply trying to win your office bracket pool, spreads for the games already being out could help you gain an early edge.

As unpredictable as the tournament can be, Vegas odds can at least give you an idea for how handicappers view the games and help you make decisions as you piece together your bracket (or open up your wallet). The odds are below for all First Four games and for most of the first round games, save for the opponents awaiting the winner of play-in games.

Only two No. 1 seeds have already gotten their official first-round draw while the other two await play-in game winners, but No. 1 overall seed Gonzaga is far and away the biggest favorite in the first round. The Bulldogs are favored by 24.5 points over No. 16 seed Georgia State, and the fact that only one No. 16 seed in the history of the tournament has ever beaten a No. 1 seed likely makes the Gonzaga moneyline a fun fan favorite in parlays this week. No. 1 seed Baylor is also a heavy favorite by 20 points over its No. 16 seed matchup, Norfolk State.

The updated odds are below.

Brackets are here! Get back in your pools and join our Men's and Women's Challenges for the chance to win a new truck and a college basketball dream trip!

First Four

No. 16 Texas Southern (-3) vs. No. 16 Texas A&M Corpus Christie
No. 16 Wright State (-1.5) vs. No. 16 Bryant
No. 12 Indiana (-3.5) vs. No. 12 Wyoming
No. 11 Notre Dame (PICK) vs. No. 11 Rutgers

First Round 

South Region

No. 1 Arizona vs. No. 16 Wright State/Bryant
No. 8 Seton Hall (-1) vs. No. 9 TCU
No. 5 Houston (-8.5) vs. No. 12 UAB
No. 4 Illinois (-8) vs. No. 13 Chattanooga
No. 3 Tennessee (-16.5) vs. No. 14 Longwood
No. 7 Ohio State (+1.5) vs. No. 10 Loyola Chicago
No. 2 Villanova (-17) vs. No. 15 Delaware

Midwest Region

No. 1 Kansas vs. No. 16 Texas Southern/Texas A&M CC
No. 8 San Diego State (-2) vs. No. 9 Creighton
No. 5 Iowa (-9.5) vs. No. 12 Richmond
No. 4 Providence (-2.5) vs. No. 13 South Dakota State
No. 6 LSU (-5) vs. No. 11 Iowa State
No. 3 Wisconsin (-8.5) vs. No. 14 Colgate
No. 7 USC (-1.5) vs. No. 10 Miami (Fla.)
No. 2 Auburn (-16.5) vs. No. 15 Jacksonville State

East Region

No. 1 Baylor (-20) vs. No. 16 Norfolk State
No. 8 North Carolina (-3) vs. No. 9 Marquette
No. 5 Saint Mary's vs. No. 12 Wyoming/Indiana
No. 4 UCLA (-15) vs. No. 13 Akron
No. 6 Texas (-1) vs. No. 11 Virginia Tech
No. 3 Purdue (-16.5) vs. No. 14 Yale
No. 7 Murray State (+1) vs. No. 10 San Francisco
No. 2 Kentucky (-17.5) vs. No. 15 Saint Peter's

West Region

No. 1 Gonzaga (-24.5) vs. No. 16 Georgia State
No. 8 Boise State (+2.5) vs. No. 9 Memphis
No. 5 UConn (-6.5) vs. No. 12 New Mexico State
No. 4 Arkansas (-6) vs. No. 13 Vermont
No. 6 Alabama vs. No. 11 Rutgers/Notre Dame
No. 3 Texas Tech (-16) vs. No. 14 Montana State
No. 7 Michigan State (-2) vs. No. 10 Davidson
No. 2 Duke (-17) vs. No. 15 Cal State Fullerton