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Individual Calculations November 2021 |
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| Heidari, Ako Total change: 7.20 | |   |
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| Mechanics Institute Tuesday Night Marathon September-October 2021 - 1800 Plus | San Francisco, California | USA | 2021-09-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1775 | 1790 | 3.50 | 6 | 0.30 | 20 | 6.00 | |
|  Kelly, Sean | | | 1782 | USA | 0.00 | 1 | -0.51 | 20 | -10.20 | |  Drury, Mark | | | 1699 | USA | 1.00 | 1 | 0.38 | 20 | 7.60 | | | Gimelfarb, Ilia | | | 1668 | USA | 1.00 | 1 | 0.33 | 20 | 6.60 | | | Mahooti, James | | | 1497 | USA | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Weng, Nicholas | | | 1812 | USA | 0.50 | 1 | 0.03 | 20 | 0.60 | | | Chambers, Ezra | f | | 2190 * | BDI | 0.00 | 1 | -0.08 | 20 | -1.60 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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) | | | | 2021 GM Walter Browne Marathon | Berkeley, California | USA | 2021-09-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1838 | 1790 | 1.00 | 2 | 0.06 | 20 | 1.20 | |
| | Donaldson, John | m | | 2190 * | USA | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Morgan, Jerry D | | | 1485 | USA | 1.00 | 1 | 0.14 | 20 | 2.80 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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