Sports betting is an extremely popular activity that helps brings fans closer to their favorite sports. The activity is so widespread that it is estimated that more than a trillion dollars are wagered on sports every year throughout the world. Sports betting is only going to grow in the future as more parts of the world legalize the activity. These are the four most popular sports to bet on around the world. 

Soccer
It only makes sense that the most popular sport in the world also has the highest betting volume every year. With more than three billion fans around the world, there are plenty of people looking for an opportunity to bet on their favorite team. Soccer betting is fairly straightforward. All you have to do is predict the final outcome of the game. Wagering on the total number of goals is another popular option.

Tennis
Tennis is another sport that is beloved throughout the world. Betting on tennis is easier than any other sport. This makes it a great option for novice sports bettors. All you have to do is predict the winner of an upcoming tennis match. The lack of draws prevents things from getting too complicated. If you want to really test out your tennis knowledge, then you can try to predict the winner of a big tournament before it begins. 

Horse Racing
Horse racing may have seen its popularity shrink in recent years, but it still brings in a lot of gambling money. The main reason for this is the fact that it is legal to bet on horse races in many places that ban betting on other sports. The goal of the bettor is to predict which horse will win an upcoming race. Expert horse racing fans will also try to predict the second and third-place finishers at the same time.

Football
Football is the most popular sport to bet on in the United States by a wide margin, but the sport is basically ignored everywhere else in the world. Dominating the US market is still enough to reach third on the list. Football fans can bet on virtually every aspect of the game. The most straightforward bets involve picking the winner of the game, and the total number of points scored.