Sometimes an automotive analogy helps. In theory you could say 'Nascar' or 'IndyCar' has an international following and you could cite how some drivers come from outside of the USA to participate. You could even go through the history books and find cars built outside the USA and raced around banked ovals. But no, the rest of the world has F1, the WRC and plenty of other motorsports governed by the FIA and participated in internationally. For the rest of the world there is zero interest in knowing the ins and outs of whatever goes on in U.S. motorsport, it is a waste of time bothering to know.

Regarding tea, Americans don't drink it, not like the British do, my point being that this is one of those anti-British things going back to something that happened in Boston, to do with not wanting to pay taxes to the King.

Given the downvotes I had to check if I had misread 'baseball' for 'basketball', but I hadn't. You are kidding yourself if you believe baseball has a big international following. I also don't believe anyone in America knows anything about Japanese baseball or whatever is going on in the Korean game in any greater depth than what a Manchester United fan knows about what is going on in women's football. The IOC don't think that baseball matters although I am sure it will feature in the Olympics if the host nation is one of the few countries you cite that do play the game.