News
MMR Range
We adjusted the MMR range of our rating system to bring it down a bit. Due to the large range we had before, MMR differences between teams could be interpreted as if teams were more unbalanced than they actually were. If you want to know how balanced or unbalanced a match was, you should look at the win probability charts of the match.
This change does not affect the inner workings of the system; it only changes how we display our MMR numbers. We expect rating changes to decrease by 20% to account for the smaller MMR range.
Uncertainty Interval
We also changed another aspect of MMR display. Previously, we were showing the player's most likely MMR; now, we show the minimum MMR the player most likely has, which is the recommended way to display MMR for the rating algorithm we use.
This change has the benefit that new accounts won't overshoot in MMR anymore if they have a small win streak, as the system now accounts for the uncertainty in the rating when displaying it. New players naturally have high uncertainty in their rating, as the system can't know yet if the player's rating is accurate. 'Minimum' refers to the lower bound of the uncertainty interval for the player's rating, representing the lowest rating that the player is estimated to have with a probability of 99%.
New Subranks
In addition, we have implemented subranks for the Master rank, categorizing players into more groups for higher precision. Previously, the Diamond rank had a broad range, overlapping with the Master MMR range. With the influx of new players, we can now further subdivide this range into distinct ranks.
As a last note, I want to clarify that our ratings represent skill relative to the current player base a player plays against. This means that PlayStation players who disable crossplay have a separate pool of players they play against, and therefore, their rank is relative to those players, not the full player base, including PC players. This also technically means that all ranks of players in a certain region are relative to the other players in the same region, as most players play mainly in one region.