Ranks are symbolic representations of which Ranked Rating (RR) bracket players are located in. Players earn RR points through playing Ranked games ONLY. Depending on several metrics recorded during ranked matches a player's RR points will change.
Factors Affecting MMR Point Gain/Loss
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Majority of RR comes from wins or losses (match outcome)
You will always gain RR on a win and lose RR on a loss
On a win, you will gain between 10 and 50 RR
Min 5 RR gain for Diamond+
On a loss you will lose between 0 and 30 RR
Max drop of 50 RR on a loss for Diamond+
On a draw you will gain a max of 20 RR (performance-based)
Only for Iron through Diamond, where we take individual performance into account.
Demotion protection: You must lose at 0 RR to demote
If you demote, you will not go below 80 RR at that rank
Promotion boost where you start at minimum 10 RR on a win
Decisiveness of a win and exceptional performance at lower ranks for individuals can help you earn rank faster (and more quickly boost smurfs to accurate ranks)