Every major sport in the US has seen the average age of its viewership increase since 2000. The NBA’s average fan is 42. The average NFL fan is 50. The average MLB fan is 57. What’s more, these audiences are limited almost entirely to North America. The Overwatch League, meanwhile, will begin with nine US teams and three from abroad—Shanghai, Seoul, and London (with more, I’m told, on the way)—and its average fan is a demographically pleasing 21 years old.