[dyarosla]

I’ve never actually seen such a competition where all previous champions must be defeated. Sounds like a much more robust system- any examples of such?

[lixtra]

Algorithm selection in computer science. Current champion in sorting seems to be Timsort[1].

[1] https://en.wikipedia.org/wiki/Timsort

[kuroguro]

There was a similar poker competition but it died out pretty quick: https://github.com/mdp/JsPoker

[RugnirViking]

World records in sporting events work this way. Perhaps it is obvious, but I consider it similar. The one diffrenece is of course that they don't compete directly as in this case.