The ELO ranking system is widely used across multiple games

ELO is calculated based on the outcome of matches. If a player wins against someone with a higher ELO, their rating increases significantly.

Elo rating system - Wikipedia

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2v2 not getting Team Rating Elo after winning multiple games… is

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the difference between elo and points (RANK) makes a lot of you

The ELO ranking system is widely used across multiple games

Which countries have the most inflated Elo ratings?