The Supreme Court overturned PASPA and states now have the right to legalize sports betting. Many have established rigorous licensing regimes to ensure the integrity of the games and consumer safety. Any sportsbook that offers wagering outside of the state’s jurisdiction or does not follow these rules is considered unlicensed and illegal.

A maximum of five sportsbooks will be opened in DC, located at professional stadiums including Capital One Arena, home to the NBA’s Washington Wizards and NHL’s Capitals. Caesars will open a sportsbook at this venue in July 2021 while BetMGM will launch one at Nationals Park, home to the MLB’s Washington Nationals.

Other brands include ESPN BET, PointsBet, Hard Rock, 888sport, FanDuel, DraftKings, and theScore Bet. Delaware residents can also make parlay wagers (3 legs or more) on NFL contests at the state’s four retail/convenience stores and three land-based books — at Delaware Park, Dover Downs, and Harrington Raceway & Casino.

Licensed sportsbooks promote responsible gambling and provide links to detailed information and advice. They are required to display a prominent Responsible Gambling banner and notify players of their options.

A number of factors go into determining odds on a particular event, from weather to injuries and even the quality of the referee. As a result, some lines may be posted incorrectly and in such cases all bets placed on the incorrect line will be voided. In addition, the money a player placed on a lopsided line will be returned to them in full. This policy is designed to protect the sportsbooks and their customers from bad luck or poor decisions made by players.