In the final 30 hours this weekend before the 68-team NCAA Men’s Basketball Tournament bracket is revealed Sunday, the remaining conference tournament champions will be crowned. That includes the highly-anticipated Big 12 (6 p.m. ET, Saturday) Southeastern (1 p.m. Sunday) and Big Ten (3:30 p.m Sunday) title games. First-time customers taking advantage of our top-rated sportsbook promo offers to wager on any of this weekend's tourney games can collect up to combined $6,400 in bonuses, including the offers below:           Top sportsbook promo offers for college basketball: How to claim your bonuses Selection Sunday is nearly upon us, and March Madness officially gets up and running Tuesday with the first two First Four contests in Dayton, Ohio. Sports betting opportunities abound, making it an ideal time to open a new sportsbook account and get in on the variety of value-laden sign-up bonuses.  Register a new account in only minutes: > Click on your desired sportsbook promo code link and tap the button that leads to the account creation page. > Fill out the required fields, including the specific code if required. Make a qualifying, minimum first deposit. > Place your initial bet on one of Sunday conference tournament championship games or another qualifying market.      Complete details on each of the offers can be found by following our sportsbook promo code links and reviewing the terms and conditions. Even after you accept a welcome offer, sportsbooks feature generous promotions throughout the year, including: Odds and profit boosts: Get in on enhanced odds and payouts on select markets. Bet and get: Garner rewards points and bonuses with each wager you place. Referral bonuses: Invite friends to join a sportsbook via your referral link and you — and often your acquaintance as well — will receive a bonus bet.   Enter TheLines' Perfect 16 March Hoops Game for Free Weekend conference tournament schedule and preview The final pieces in the NCAA tourney bracket puzzle will fall into place this weekend. Following is a look at Saturday and Sunday's major conference tourney schedule. Please refer to our new betting odds page for updated game point spreads, moneylines and totals. Saturday > Big Ten semifinals: 1 p.m. and 3:30 p.m. ET on CBS and Paramount+ > SEC semifinals: 1 p.m. and 3:30 p.m. ET on ESPN > Big 12 championship: 6 p.m. on ESPN and ESPN+ > Big East Championship: 6:30 p.m. on FOX > ACC championship: 8:30 p.m. on ESPN Sunday > Ivy League championship: Noon ET on ESPN2 / ESPN+ > SEC championship: 1 p.m. on ESPN > Atlantic 10 championship: 1 p.m. on CBS > American Athletic championship: 3 p.m. on ESPN / ESPN+ > Big Ten championship: 3:30 p.m. on CBS / Paramount+