Brabourne Stadium - International cricket matches in future.

In most sports, athletes are contracted to play in one league only. There may exist subsidiary leagues that belong to a parent company, so jumping between leagues belonging to the same owner is possible.

That said, while the fans may find it entertaining to watch players from different leagues, chances are it's likely not to happen as long as they've signed-off to certain rules based on their contract.

It is also possible for a friendly match to take place if the owners agree to a set of rules. For example, a boxer agreeing to fight a mixed martial artist.