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Individual Calculations September 2021 |
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| Johnson, Donald Total change: 20.00 | |   |
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| 2021 North American Youth Chess Championships - Open Under 16 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2011 | 2063 | 5.00 | 8 | 0.50 | 40 | 20.00 | |
|  Xu, Bernie | | | 1895 | USA | 0.50 | 1 | -0.22 | 40 | -8.80 | |  Vu, Leonard | | | 1758 | USA | 1.00 | 1 | 0.14 | 40 | 5.60 | | | Lee, Linden Marcus | | | 1931 | USA | 0.00 | 1 | -0.68 | 40 | -27.20 | | | Kaplan, Avi Harris | | | 1756 | USA | 1.00 | 1 | 0.14 | 40 | 5.60 | | | Zhao, Ian | f | | 2332 | CAN | 1.00 | 1 | 0.83 | 40 | 33.20 | | | Rama, Tejas | | | 2282 | USA | 0.50 | 1 | 0.28 | 40 | 11.20 | | | Zhao, Erick | c | | 2121 | USA | 0.00 | 1 | -0.42 | 40 | -16.80 | | | Lu, Jason | | | 2011 | USA | 1.00 | 1 | 0.43 | 40 | 17.20 | |
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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