Just what gives someone the 'right' to call themselves a "World Champion" ?
Do you have to be simply be the best that plays the game in the world ? And just what does that mean ? What if no other Nation plays of cares about that sport. Say there were only 3 teams and they were all in one country....if you win can you say World Champion ?
My Tae Kwon Do Grandmaster said back when he competed in Korea, they competed - but you were either an Army Champ or National Champ. World Champ was never coined since they knew no one else in the world competed.
Ok so what about if you have players from many (at least over 7) countries in a domestic league - and these players were collectively some of the best - could you be World Champ ?
Well - the premiership in England is like that but they don't call themselves World Champs when a team wins the FA Cup.
So World Football (Soccer) Champs , World Tennis Champ I can see. Perhaps even Cricket (barely), and Rugby (barely) .
But how do you get to win the World Series ? How do you become an NFL or NBA World Champ (is that term used ?) .........and explain again who would be World Basketball champs between the NBA Champs and the Olympic Champs ? Wouldn't the Olympic Champs have a greater right to that title ?