chess.com ratings change?
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chess.com ratings change?
Hi there, I noticed the other day that all my ratings on chess.com have dropped by about 300 points. Has anyone else experience this?
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Re: chess.com ratings change?
If you let me know your chess.com username I will take a look and see if your ratings have dropped by 300 points.MJMcCready wrote: ↑Sun Apr 28, 2024 7:03 pmHi there, I noticed the other day that all my ratings on chess.com have dropped by about 300 points. Has anyone else experience this?
British Chess News : britishchessnews.com
Twitter: @BritishChess
Facebook: facebook.com/groups/britishchess
Twitter: @BritishChess
Facebook: facebook.com/groups/britishchess
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Re: chess.com ratings change?
Or you could just type his name into a search engine and it will bring up the account.John Upham wrote: ↑Sun Apr 28, 2024 8:14 pmIf you let me know your chess.com username I will take a look and see if your ratings have dropped by 300 points.MJMcCready wrote: ↑Sun Apr 28, 2024 7:03 pmHi there, I noticed the other day that all my ratings on chess.com have dropped by about 300 points. Has anyone else experience this?
From what I can see he played a rapid game where his rating ended at 1546 and then played blitz for which his rating is a lot lower. It also fooled me at first
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Re: chess.com ratings change?
As my old Latin master might have said apropos chess.com ratings, "Qui curat?"
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Re: chess.com ratings change?
Well, I haven't paid all that attention to it recently, so if no one else has had a massive drop, maybe I just lost more games than I realize. I hardly ever play, so its quite conceivable.
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Re: chess.com ratings change?
If you don't play very often, then your ratings will be subject to huge swings - it uses the Glicko system, and that's the way Glicko works.
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Re: chess.com ratings change?
You lost a lot of points in February but thought you were suggesting chess.com had made an adjustment to your ratings rather than losing the points in games played.MJMcCready wrote: ↑Sun Apr 28, 2024 9:18 pmWell, I haven't paid all that attention to it recently, so if no one else has had a massive drop, maybe I just lost more games than I realize. I hardly ever play, so its quite conceivable.
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Re: chess.com ratings change?
That maybe the case but there seems to be another drop in play. My rapid rating was about 1830. Its plummeted since then and I can't quite work out why.LawrenceCooper wrote: ↑Mon Apr 29, 2024 10:42 amYou lost a lot of points in February but thought you were suggesting chess.com had made an adjustment to your ratings rather than losing the points in games played.MJMcCready wrote: ↑Sun Apr 28, 2024 9:18 pmWell, I haven't paid all that attention to it recently, so if no one else has had a massive drop, maybe I just lost more games than I realize. I hardly ever play, so its quite conceivable.
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Re: chess.com ratings change?
I've long thought there's an invalid assumption in the underlying theory of the Glicko system. There's a presumption that just because you haven't played much if at all in the pool of players measured on a local Glicko system, that you haven't played anywhere at all and are thus totally rusty. It can work the other way. If you want a major ratings boost on a Glicko based system and are playing well, just avoid playing on the server or national ratimgs system for a while. Then come back and clean up on ratings until the k factor drops back to a normal value.IM Jack Rudd wrote: ↑Sun Apr 28, 2024 10:11 pmIf you don't play very often, then your ratings will be subject to huge swings - it uses the Glicko system, and that's the way Glicko works.
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Re: chess.com ratings change?
Not really, no: the presumption is more "we haven't seen much of you recently, so we have no idea if our estimate of your strength is still any good; we'll raise your K factor to indicate our uncertainty".Roger de Coverly wrote: ↑Mon Apr 29, 2024 5:33 pmI've long thought there's an invalid assumption in the underlying theory of the Glicko system. There's a presumption that just because you haven't played much if at all in the pool of players measured on a local Glicko system, that you haven't played anywhere at all and are thus totally rusty.IM Jack Rudd wrote: ↑Sun Apr 28, 2024 10:11 pmIf you don't play very often, then your ratings will be subject to huge swings - it uses the Glicko system, and that's the way Glicko works.
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Re: chess.com ratings change?
Between February 20th and 28th you dropped from 1843 to 1489 with a score of around 6 wins and 19 losses.MJMcCready wrote: ↑Mon Apr 29, 2024 5:19 pmThat maybe the case but there seems to be another drop in play. My rapid rating was about 1830. Its plummeted since then and I can't quite work out why.LawrenceCooper wrote: ↑Mon Apr 29, 2024 10:42 amYou lost a lot of points in February but thought you were suggesting chess.com had made an adjustment to your ratings rather than losing the points in games played.MJMcCready wrote: ↑Sun Apr 28, 2024 9:18 pmWell, I haven't paid all that attention to it recently, so if no one else has had a massive drop, maybe I just lost more games than I realize. I hardly ever play, so its quite conceivable.
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Re: chess.com ratings change?
Oh, that explains it. I know I played a lot late night games but I didn't think it was that many.