highest elo gain/loss in one game

I was wondering what the largest rating gain/loss has been on lichess, eg a 1500? beats a 2000+
what would the hypothetical maximum be?

I was wondering what the largest rating gain/loss has been on lichess, eg a 1500? beats a 2000+ what would the hypothetical maximum be?

BinaryPawn

https://lichess.org/jVrQnkGj/black

Nonetheless, other systems have a known maximum rating change. An example of that is FIDE's Elo system. Suppose we have player A with the maximum K-factor possible (40) who wins against an opponent who is rated >735 points above him. Then, if we use FIDE's method to calculate rating change, we get that the probability of player A winning is 0.00, thus the rating change will be (1-0.00)*40=40.

However, FIDE recently modified its rating rules, so currently if we face two players with a rating difference of more than 400 points, that difference will be considered as if it was of 400 points for rating purposes, meaning that then player A would have 0.08 probability of winning and thus his rating change would be (1-0.08)*40=36,8

So the maximum FIDE rating change for a player on a single game is +/- 36.8 points

Source: https://handbook.fide.com/chapter/B022024 (tables)

Lichess uses the Glicko-2 algorithm for rating calculations, a different and more mathematically sophisticated system than the classic Elo system used by FIDE. Unfortunately, I do not know the maximum rating change ever to have happened on lichess, but I can provide you with a big one, https://lichess.org/jVrQnkGj/black :) Nonetheless, other systems have a known maximum rating change. An example of that is FIDE's Elo system. Suppose we have player A with the maximum K-factor possible (40) who wins against an opponent who is rated >735 points above him. Then, if we use FIDE's method to calculate rating change, we get that the probability of player A winning is 0.00, thus the rating change will be (1-0.00)*40=40. However, FIDE recently modified its rating rules, so currently if we face two players with a rating difference of more than 400 points, that difference will be considered as if it was of 400 points for rating purposes, meaning that then player A would have 0.08 probability of winning and thus his rating change would be (1-0.08)*40=36,8 So the maximum FIDE rating change for a player on a single game is +/- 36.8 points Source: https://handbook.fide.com/chapter/B022024 (tables)

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