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Individual Calculations September 2021 |
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| Vu, Leonard Total change: 26.80 | |   |
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| 26th Annual Pacific Coast Open - Premier | Van Nuys, California | USA | 2021-07-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1992 | 1758 | 2.00 | 5 | 0.92 | 40 | 36.80 | |
|  Nathan, Krishna | | | 2022 | USA | 0.00 | 1 | -0.18 | 40 | -7.20 | |  Zhang, Nathaniel Albion | | | 1900 | USA | 0.00 | 1 | -0.31 | 40 | -12.40 | | | Shuben, Matthew Spencer | | | 1992 | USA | 1.00 | 1 | 0.79 | 40 | 31.60 | | | Leano, Bryan B | | | 1928 | USA | 0.00 | 1 | -0.28 | 40 | -11.20 | | | Wan, Caleb | | | 2119 | USA | 1.00 | 1 | 0.90 | 40 | 36.00 | |
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 North American Youth Chess Championships - Open Under 16 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1781 | 1758 | 2.50 | 6 | -0.25 | 40 | -10.00 | |
| | Johnson, Donald | | | 2063 | USA | 0.00 | 1 | -0.14 | 40 | -5.60 | | | Singh, Hersh | | | 2052 | USA | 0.00 | 1 | -0.15 | 40 | -6.00 | | | Modi, Ethan | | | 1838 | USA | 0.00 | 1 | -0.39 | 40 | -15.60 | | | Gaisinsky, Jacob | | | 1358 * | CAN | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Yoker, Callum | | | 1475 | CAN | 1.00 | 1 | 0.16 | 40 | 6.40 | | | Bui, Alan | | | 1898 | CAN | 0.50 | 1 | 0.19 | 40 | 7.60 | | | * 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) | | |
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