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Individual Calculations October 2021 |
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| Guo, Ethan Total change: 2.66 | |   |
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| BayAreaChess 45th People's Tournament - X | Santa Clara, California | USA | 2021-09-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1595 | 1653 | 1.50 | 5 | -1.38 | 38 | -52.44 | |
|  Jiang, Lucas | | | 1723 | USA | 0.00 | 1 | -0.40 | 38 | -15.20 | |  Wang, Jeffery | | | 1499 | USA | 0.50 | 1 | -0.21 | 38 | -7.98 | | | Tia, Rudy Goce | | | 1746 | PNG | 0.00 | 1 | -0.37 | 38 | -14.06 | | | Zhou, Ruoyu | | | 1510 | USA | 0.50 | 1 | -0.19 | 38 | -7.22 | | | Wen, Kally | | wc | 1495 | USA | 0.50 | 1 | -0.21 | 38 | -7.98 | |
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 Las Vegas Open - Open | Las Vegas, Nevada | USA | 2021-09-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1936 | 1653 | 1.00 | 3 | 0.49 | 38 | 18.62 | |
| | Wang, Andrew | | | 2016 | USA | 0.00 | 1 | -0.10 | 38 | -3.80 | | | McConnell, Sullivan Mac | | | 1961 | USA | 0.50 | 1 | 0.36 | 38 | 13.68 | | | Kvakovszky, George | | | 1832 | USA | 0.50 | 1 | 0.23 | 38 | 8.74 | |
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 Las Vegas Open - Under 2200 | Las Vegas, Nevada | USA | 2021-09-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1836 | 1653 | 4.00 | 6 | 2.35 | 38 | 89.30 | |
| | Barbre, Stephen | | | 1935 | USA | 1.00 | 1 | 0.84 | 38 | 31.92 | | | Beck, Alec | | | 1765 | USA | 0.50 | 1 | 0.15 | 38 | 5.70 | | | Merwin, Steven E | | | 1937 | USA | 0.00 | 1 | -0.16 | 38 | -6.08 | | | Imada, Todd | | | 1918 | USA | 1.00 | 1 | 0.82 | 38 | 31.16 | | | Kaleeswaran, Jaisuraj | | | 1863 | USA | 0.50 | 1 | 0.27 | 38 | 10.26 | | | Huddleston, James Douglas | | | 1600 | USA | 1.00 | 1 | 0.43 | 38 | 16.34 | |
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 SJCC Fall Championship | Milpitas, California | USA | 2021-09-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1695 | 1653 | 0.50 | 4 | -1.39 | 38 | -52.82 | |
| | Martinez, Isaac | | | 2053 * | USA | 0.00 | 1 | -0.08 | 38 | -3.04 | | | Wang, Jeffrey | | | 1499 | USA | 0.00 | 1 | -0.71 | 38 | -26.98 | | | Achuthan, Aryan | | | 1527 | USA | 0.50 | 1 | -0.17 | 38 | -6.46 | | | Guo, Andrew | | | 1702 | USA | 0.00 | 1 | -0.43 | 38 | -16.34 | | | * 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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