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Individual Calculations September 2023 |
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| Gibbins, Wilson K Total change: -18.40 | |   |
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| Washington Open - Open | Redmond, WA | USA | 2023-05-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1656 | 1981 | 3.50 | 5 | -0.51 | 20 | -10.20 | |
|  Sang, Tian | f | | 2206 | USA | 0.00 | 1 | -0.22 | 20 | -4.40 | |  Patankar, Vijay | | | 1492 | USA | 1.00 | 1 | 0.04 | 20 | 0.80 | | | Morehouse, Ethan | | | 1458 | USA | 0.50 | 1 | -0.47 | 20 | -9.40 | | | Li, Edward | | | 1542 | USA | 1.00 | 1 | 0.06 | 20 | 1.20 | | | Ramkumar, Nikhil | | | 1581 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | * 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) | | | | 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 |
| 1924 | 1981 | 3.00 | 6 | -0.41 | 20 | -8.20 | |
| | Hobbs, Richard P | | | 1726 | USA | 1.00 | 1 | 0.19 | 20 | 3.80 | | | Altucher, James | | | 1776 | USA | 0.00 | 1 | -0.76 | 20 | -15.20 | | | Gavrysh, Leonid | | | 1883 | UKR | 0.50 | 1 | -0.13 | 20 | -2.60 | | | Rosario, Salvador | | | 1923 | USA | 0.50 | 1 | -0.08 | 20 | -1.60 | | | Sailer, Mike | | | 2109 | USA | 0.50 | 1 | 0.17 | 20 | 3.40 | | | Joelson, Daniel | | | 2129 | USA | 0.50 | 1 | 0.20 | 20 | 4.00 | |
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) | | |
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