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Individual Calculations July 2023 |
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| Costello, Alexander Total change: 37.80 | |   |
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| 2023 National Open | Las Vegas, NV | USA | 2023-06-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2253 | 2186 | 5.50 | 9 | 1.89 | 20 | 37.80 | |
|  Balyan, Vardan | | | 1786 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Wen, Tommy | f | | 2433 | USA | 0.00 | 1 | -0.19 | 20 | -3.80 | | | Mohammadi, Sina | | | 1881 | USA | 1.00 | 1 | 0.14 | 20 | 2.80 | | | Bitoon, Richard | g | | 2372 | PHI | 1.00 | 1 | 0.74 | 20 | 14.80 | | | Heimann, Mark | m | | 2426 | USA | 0.50 | 1 | 0.30 | 20 | 6.00 | | | Chasin, Nico | m | | 2459 | USA | 0.00 | 1 | -0.17 | 20 | -3.40 | | | Bachin, Vitaly | m | | 2343 | RUS | 0.50 | 1 | 0.21 | 20 | 4.20 | | | Espinosa, Pedro | c | | 2233 | USA | 0.50 | 1 | 0.07 | 20 | 1.40 | | | Tang, Zoey | f | wm | 2348 | USA | 1.00 | 1 | 0.71 | 20 | 14.20 | | | * 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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