Theoretically yes. Many people claim that they have got rich from placing various sports wagers. Now, while these are true stories that did happen, it's important to understand that there is no way to predict an event's outcome with certainty. Another thing to consider is that you would need to make very few mistakes to ensure that you continue to add to and not detract from your bankroll. In other words, the opportunity exists, but it's not advised as a way of becoming rich.