We’re on the brink of March Madness with the high-major men’s conference tournaments down to the final handful of teams in each bracket. Play continues Friday night with some of nation’s top teams — including Duke, St. John’s, Houston, Florida and Alabama — competing in their respective semifinal or quarterfinal contests. Betting odds are posted for the all the games, and new customers taking advantage of our top-rated sportsbook promo offers to wager on Friday night’s college hoops action can collect up to combined $6,400 in bonuses, including the offers below:           Top sportsbook promo offers for college basketball: Claim your bonuses Now is a great time to open a new sportsbook account and get in on the variety of value-packed sign-up bonuses.  It’s no sweat to sign up and start betting: > 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 Friday night’s conference tournament games or another qualifying market.    Full 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 Friday night conference tournament schedule and preview As mentioned, a number of the top-ranked teams in the Associated Press poll will be in action Friday night. Following is a glance at the top high-major conference tourney matchups, odds and tip times for Friday night. The point spreads and game totals are the consensus lines from the leading online sportsbooks as of Friday afternoon: > Big East semifinal: St. John’s (-3.5, 144) vs. Marquette, 6:30 p.m. ET (FOX) > Big Ten quarterfinal: Maryland (-1.5, 158.5) vs. Illinois, 6:30 p.m. (Big Ten Network) > ACC semifinal: Duke (-7, 153) vs. North Carolina, 7 p.m. (ESPN) > Big 12 semifinal: Houston (-6.5, 134) vs. BYU, 7 p.m. (ESPN2) > SEC quarterfinal: Florida (-9, 162.5) vs. Missouri, 7 p.m. (SEC Network) > Big Ten quarterfinal: Michigan vs. Purdue (-2.5, 147.5), 9 p.m. (Big Ten Network) > Big East semifinal: Creighton vs. UConn (-4, 139.5), 9 p.m. (FOX) > SEC quarterfinal: Alabama (-7.5, 179.5) vs. Kentucky, 9:30 p.m. (SEC Network) > ACC semifinal: Clemson (-1.5, 141) vs. Louisville, 9:30 p.m. (ESPN) > Big 12 semifinal: Texas Tech (-2, 153) vs. Arizona, 9:30 p.m. (ESPN2)