Sportsbooks are places where people place wagers on the outcome of sporting events. They can be found legally, through bookmakers or sportsbooks, or illegally, through private enterprises called “bookies”. A sportsbook has a variety of betting options such as single-game wagers, parlays and future bets. In addition to standard lines, some offer special odds for certain types of bets like point spreads or totals.

There are many factors that can impact sportsbook odds, such as public betting patterns and weather. Injuries are another factor that can have a big impact on the betting public’s opinion of a team’s chances. To counter these effects, a bettor can look at the odds and try to bet before or after the line moves.

The odds for a specific event are calculated by the sportsbook using data from a number of sources, including computer algorithms, power rankings and outside consultants. Odds are then displayed on the sportsbook’s website and vary depending on which side of a bet is expected to win. They are typically based on $100 bets and differ from one sportsbook to the next based on their own individual sources of data.

Straight bets are the most common type of sports wager. They involve predicting the winner of a single event. For example, if you think the Toronto Raptors will win against the Boston Celtics in an NBA game, you would place a bet on Toronto. The more accurate your prediction is, the higher the payout.