Why my d1R moved
What actually moves the number, and why winning doesn't always move it up.
Your d1R isn't a win counter. It's an estimate of how you'd do against a given opponent, updated every time we get new evidence.
What moves it
- Who you played. Beating someone well above you moves you a lot; beating someone well below you moves you barely at all.
- Whether the result was confirmed. An unconfirmed self-report is close to weightless, on purpose.
- What kind of match it was. A tournament result counts for more than a casual one, because it's refereed, recorded and hard to fake.
- How sure we already are about you. New players move fast because we know little; settled players move slowly because we know a lot.
This is why you can win and still drift down. If the maths expected you to win nine times out of ten and you won narrowly, that's mild evidence you're not quite as far ahead as we thought. There's a floor on it: a win never costs you as much as the same scoreline as a loss would.
Common questions
I won and my d1R went down.
That happens when you were heavily favoured and the result was closer than expected. The drop is small and protected — winning can never cost you what losing that same match would have.
Why can't I see a singles number?
We hold it back until you've played enough singles for it to mean anything. A number built on two matches would be noise dressed up as a rating.
How often does it update?
As soon as a match reaches confirmed. There's no nightly batch to wait for.