You don't need to wield huge weapons, wear armor, or cast powerful magic in real life to defeat your opponents and claim the prize. With plenty of practice, quick reflexes, and great teamwork, players of League of Legends, Dota 2, and other multiplayer online battle arena games can hit the big-time on the esports scene. Championship titles, fame, and enormous cash prizes await the very best players. But it takes a lot of hard work to become the best...