Official betting is a type of sports wagering that uses official game data, which can include information on players, teams, and game officials. This can be a great way to increase your odds of winning, but it’s important to know what’s going on before you place a bet.

There are different rules for different types of bets, and you should consult the sportsbook’s policy. For instance, a moneyline bet must have a game that has been officially played for at least 5.0 innings or 4.5 if the home team is winning to have action.

For player props, a player must be in the starting lineup for the bet to have action. If the player doesn’t have an appearance, the bet is forfeited and you will receive a refund.

Baseball games can be shortened or suspended due to inclement weather. In those cases, sportsbooks typically require a game to be held at the original time and date for the bet to stand.

Major League Baseball’s (MLB) Code of Conduct prohibits gambling, bribery, and inside information. MLB also requires sportsbooks to offer a variety of tools and resources to help fans bet responsibly.

The league is a partner to the American Gaming Association’s Have A Game Plan. Bet Responsibly public service campaign, and has expanded its partnership with the National Council on Problem Gambling to serve as a Platinum Member.

The earliest state to legalize sports betting was Nevada, which launched in 2018. But a major Supreme Court ruling in May 2018 opened up the door for more states to get involved. Now, there are 33 states and Washington D.C. that offer some form of legal sports betting, with more states debating whether to join the club.