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Individual Calculations February 2023 |
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| Zhou, Greg Total change: 12.80 | |   |
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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 |
| 1662 | 1522 | 1.50 | 5 | -0.10 | 40 | -4.00 | |
|  Merwin, Steven E | | | 1813 | USA | 0.00 | 1 | -0.15 | 40 | -6.00 | |  Dhingra, Sangeeta | | | 1681 | USA | 0.50 | 1 | 0.21 | 40 | 8.40 | | | He, Samuel | | | 1660 | USA | 0.00 | 1 | -0.31 | 40 | -12.40 | | | Peng, Alan | | | 1503 | USA | 1.00 | 1 | 0.47 | 40 | 18.80 | | | Li, Michael | | | 1654 | USA | 0.00 | 1 | -0.32 | 40 | -12.80 | |
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 |
| 1652 | 1510 | 2.00 | 5 | 0.42 | 40 | 16.80 | |
| | Koon, Kingsley | | | 1728 | USA | 1.00 | 1 | 0.78 | 40 | 31.20 | | | Zhou, Ivan | | | 1540 | USA | 0.00 | 1 | -0.46 | 40 | -18.40 | | | Clemens, Kristian | | | 1746 | USA | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Zhou, Tony | | | 1616 | USA | 0.50 | 1 | 0.14 | 40 | 5.60 | | | Dharmatti, Ritesh | | | 1629 | IND | 0.50 | 1 | 0.16 | 40 | 6.40 | |
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) | | |
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