> Basketball is pretty much worldwide

Is it played worldwide? Sure, but so is volleyball. It's certainly not a culturally significant sport everywhere. I think my country has a basketball league, but I don't know literally anything about it. The only player I can recall the name of is Michael Jordan.

> is tennis (and golf, up to a point at least)

Both are sports for rich (countries) only. How many tennis players you know are from Africa?

> Cricket is played in a minority of countries, but those countries are scattered across the world so it's not exactly "regional".

You can think of the Commonwealth as a "logical region". Cricket is popular only in a couple of countries with common history.