Capacity: 60,000
Location: Mumbai, India
Current teams: Mumbai Indians
Established: 2008

We know, we know. Cricket? Twice? Let us just tell you that the Indian Premiere League (IPL) is the fastest growing sports league in the world (it's worth an estimated $4.13 billion) and it's only been around since 2008. Now also remember that 1) India has a billion people, and 2) China doesn't even have sports leagues yet. Now go learn about cricket so you'll have something to talk about with your co-workers/bosses in 10 years.