Continuing their experiments with Ranked Matchmaking, Valve announces a new change to the system – replacing the Core/Support MMR with an overall MMR.

In this update, Valve explains that the single MMR will still have handicaps for each Ranked Roles to help the system assess your performance levels.

Let’s say you are a Legend 5 Hard Support player with around 3700 MMR. When you queue for Hard Support, the matchmaker will place you around players with approximately 3700 MMR. But if their recent assessments on your Hard Support performance are better, they will match you with players of the same skill level and display a higher adjusted Medal when you join a game.

On the other hand, you consider the Mid as your weakest role and when you queue as a Mid laner, the matchmaker will match you at a lower MMR and display a lower Medal compared to your actual MMR Medal. When you queue for various roles, the matchmaker will assign an adjusted Medal in matches depending on your performance on that certain role, but your actual MMR is still the one being calculated when you try to grind.

The adjusted Medals will just be a basis to give a more balanced matchmaking experience. No matter what role you play, each game will still have an effect on your actual MMR. The initial levels for each role will be determined based on a player’s recent Core/Support MMR as well as an analysis of the past 100 games.