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Individual Calculations February 2023 |
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| Sun, Ethan Total change: 7.20 | |   |
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| 32nd annual North American Open - U2100 | Paradise, Nevada | USA | 2022-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1713 | 1528 | 0.50 | 3 | -0.31 | 40 | -12.40 | |
|  Coy, Matthew Miller | | | 1734 | USA | 0.00 | 1 | -0.24 | 40 | -9.60 | |  Merwin, Steven E | | | 1813 | USA | 0.50 | 1 | 0.34 | 40 | 13.60 | | | Wang, Rachel Zihan | | | 1592 | CAN | 0.00 | 1 | -0.41 | 40 | -16.40 | |
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) | | | | 14th annual Golden State Open - U2100 Section | Concord, CA | USA | 2023-01-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1586 | 1594 | 3.00 | 5 | 0.49 | 40 | 19.60 | |
| | Boldi, Nicholas Armen | | | 1569 | USA | 0.00 | 1 | -0.53 | 40 | -21.20 | | | Van Gelder, Allen | | | 1245 | USA | 1.00 | 1 | 0.11 | 40 | 4.40 | | | Melville, Cailen | | | 1670 | USA | 1.00 | 1 | 0.60 | 40 | 24.00 | | | Handigol, Abhishek | | | 1858 | USA | 0.00 | 1 | -0.18 | 40 | -7.20 | | | Obrien, William Timothy | | | 1586 | USA | 1.00 | 1 | 0.49 | 40 | 19.60 | |
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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