I would refer cricket and football
Football is the most widely mentioned here, It is proof that Football is very well known by the world, the most popular sport today is Football. The answers here usually depend on their favorite sports, and Football is a favorite of almost everyone here.
I know football might be the popular but in our country it is not the popular game because people love to play basketball and that influence me as well to love that game and until now I'm playing and at the same time I do bet online. To gamble with the sport you really love to do is very satisfying as you will get the entertainment you are looking, even if we lose sometimes but the fun is there to make me accept my loses.