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Individual Calculations September 2023 |
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| Kraai, Jesse Total change: 4.00 | |   |
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| 2023 U.S. Senior Open Championship | Elmhurst, IL | USA | 2023-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2018 | 2380 | 5.00 | 6 | -0.26 | 10 | -2.60 | |
|  Cronin, Mike A | | | 1980 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | |  Carey, Michael P | | | 1866 | USA | 1.00 | 1 | 0.04 | 10 | 0.40 | | | Szpisjak, Steven J | | | 1893 | USA | 1.00 | 1 | 0.04 | 10 | 0.40 | | | Bereolos, Peter | f | | 2158 | USA | 0.00 | 1 | -0.78 | 10 | -7.80 | | | Zaderman, Vitaly | | | 2174 | USA | 1.00 | 1 | 0.24 | 10 | 2.40 | | | Sana, Mariano | | | 2039 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | * 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) | | | | 6th Annual Irwin National Tournament of Senior State Champions | Grand Rapids, Michigan | USA | 2023-07-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2227 | 2380 | 4.00 | 5 | 0.66 | 10 | 6.60 | |
| | Lilly, Bryan | | | 1999 | USA | 1.00 | 1 | 0.09 | 10 | 0.90 | | | Hulsey, Mark A | | | 2022 | USA | 1.00 | 1 | 0.10 | 10 | 1.00 | | | Managadze, Nikoloz | m | | 2371 | GEO | 1.00 | 1 | 0.49 | 10 | 4.90 | | | Fedorowicz, John P | g | | 2388 | USA | 0.50 | 1 | 0.01 | 10 | 0.10 | | | Sevillano, Enrico | g | | 2357 | USA | 0.50 | 1 | -0.03 | 10 | -0.30 | |
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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