website: superbook.com
SuperBook started out as a bookmaker in Las Vegas, NV. They now offer online sports betting.
Their motto is "Good teams win, great teams cover". FYI this is not mathematically true.
SuperBook offers a variety of sports to bet on, including football, basketball, baseball, hockey, and soccer. They also offer a variety of regular betting options including moneyline, spread, and prop bets.
SuperBook claims to offer the largest variety of prop bets on the market.