Your PSR comes from two things: how skilled the system thinks you are, and how confident it is. Every change has a reason.
Two values combine to produce your PSR: how skilled the system estimates you are, and how confident it is in that estimate.
New players start with a wide uncertainty range that narrows the more verified matches you log. Your PSR is always a conservative floor of your ability, not your peak or your average.
OnePSR uses a conservative rating model. Your PSR reflects your proven skill floor, not your peak performance or estimated average.
Every PSR update accounts for three variables: who you played, what the score was, and how confident the system already is in your skill level.
Beating a higher-rated opponent earns more PSR than beating a lower-rated one. Losing to a stronger player costs less. The algorithm always weighs who you faced, not just the outcome.
Decisive victories earn slightly more than narrow wins. The bonus is capped to discourage score farming. Once you reach Adv. Intermediate (3,500+), margin no longer applies. A win is a win.
New players have high uncertainty, so their rating moves fast in both directions. As you log more verified matches, the system becomes confident in your level and changes become smaller and more precise.