Definition of Sports Betting

What is "sports betting"? How does sports betting work, and what do you need to know before you get started?

Sports betting is the practice of placing a wager on the outcome of a sporting event. If your prediction is correct, you win money based on the odds offered by the sportsbook at the time you placed your bet. If your prediction is incorrect, you lose your stake. It is one of the oldest and most widespread forms of gambling in the world, and today it is available online through licensed operators across most major markets.

The core concept is straightforward. You choose an event, select a market, decide how much to stake, and place your bet. The sportsbook sets the odds for each possible outcome, and those odds determine your potential return. The higher the odds on a selection, the less likely the sportsbook considers that outcome to be - and the more you stand to win if it happens.

How do odds work in sports betting?

Odds are the language of sports betting. They tell you two things at once: the implied probability of an outcome happening, and how much you will win if your bet is successful. Online sportsbooks in most international markets display odds in decimal format. A decimal odd of 2.00 means you double your money on a winning bet - your original stake is returned plus an equal amount in profit. An odd of 1.50 means you win 50% of your stake in profit. An odd of 3.00 means you win twice your stake in profit.

Let's look at a simple example. Chelsea are playing Arsenal in the Premier League. The odds for the match look like this:

Chelsea, 2.40
Draw, 3.20
Arsenal, 3.10

If you bet $20 on Chelsea at 2.40, your total return if Chelsea win is $48 ($20 x 2.40). Your profit is $28. If Chelsea do not win, you lose your $20 stake.

What sports can you bet on?

The range of sports available at major online sportsbooks is enormous. Football (soccer) is the most popular globally, followed by American football, basketball, tennis, cricket, rugby, boxing, mixed martial arts, horse racing, golf, baseball and many others. Major sportsbooks also cover less mainstream sports including darts, snooker, cycling and esports.

Within each sport, there are typically dozens or even hundreds of individual betting markets available. You are not limited to betting on who wins - you can bet on the total number of goals scored, which team scores first, the halftime result, individual player statistics, and much more.

What are the main types of sports bets?

The most common bet types you will encounter are the following.

The money line or match winner bet is the simplest form of sports betting. You pick which team or player you think will win, and if they do, you collect your winnings.

The point spread or handicap bet levels the playing field between a strong favourite and a weaker opponent by giving the underdog a head start of a set number of points. You then bet on whether the favourite can overcome that handicap, or whether the underdog can keep it close enough to cover the spread.

The over/under or totals bet asks you to predict whether the total combined score in a game will be higher or lower than a number set by the sportsbook, regardless of who wins.

An accumulator or parlay combines multiple individual selections into a single bet. All selections must win for the bet to pay out, but because the odds of each selection multiply together, accumulators can pay out at significantly higher odds than single bets.

A futures bet is a wager placed well in advance on a long-term outcome - for example, which team will win the league championship at the end of the season.

How does online sports betting work?

To place a bet online, you need an account with a licensed sportsbook. The process involves registering an account, verifying your identity, making a deposit, and then browsing the available markets to find the bet you want to place. Most major sportsbooks offer mobile apps for iOS and Android so you can bet from your phone or tablet.

Once your account is open, you add selections to your betslip, enter your stake, review your potential return, and confirm the bet. Winnings from successful bets are credited to your account balance, from where you can withdraw them or use them to place further bets.

What should I know before I start sports betting?

The most important thing to understand is that sports betting carries risk. There is no guaranteed way to win, and the sportsbook always has a built-in margin - called the vig or juice - which means the odds on offer are always slightly less than the true probability of each outcome. Over the long term, most casual bettors lose more than they win. Treat sports betting as entertainment rather than a source of income, and only ever bet money you can afford to lose.

Set a budget before you start and stick to it. Many licensed sportsbooks offer responsible gambling tools such as deposit limits, loss limits and self-exclusion options. These are worth using from day one.

If you are ready to start, the sportsbook featured in the box above offers a new customer welcome offer. Check the current terms and conditions for your region before depositing, as the details vary and change periodically.