Of course, especially when there's such a tournament he was specialized with for example FIFA World Cup or some tournaments. Gambler can make a good money if he is a fan of the sports, know the skills of the players advantage and disadvantages but gambling is still gambling, even with the best gambler won't tell what could be the output and there will always a risk involve. So you can make a living from sports betting as long as you know how to manage your bankroll along with a good prediction on things.