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Individual Calculations October 2021 |
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| Trestor, David Total change: -7.80 | |   |
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| 2021 IM John Grefe Marathon | Berkeley, California | USA | 2021-08-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1597 | 1583 | 1.50 | 4 | -0.39 | 20 | -7.80 | |
|  Thibault, William | | | 1249 | USA | 0.50 | 1 | -0.38 | 20 | -7.60 | | | Shrauger, Alex | | | 1688 | USA | 0.00 | 1 | -0.36 | 20 | -7.20 | | | Busch, Jonah | | | 1838 | USA | 0.00 | 1 | -0.19 | 20 | -3.80 | |  Lemkin, Ben | | | 1614 | USA | 1.00 | 1 | 0.54 | 20 | 10.80 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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