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Individual Calculations December 2021 |
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| Costello, Alexander John Total change: -6.20 | |   |
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| 16th Annual Los Angeles Open - Major | Van Nuys, California | USA | 2021-11-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1975 | 2249 | 3.00 | 4 | -0.31 | 20 | -6.20 | |
|  Petrosyan, Alexander | | | 1921 | ARM | 1.00 | 1 | 0.13 | 20 | 2.60 | |  Yanayt, Eugene | f | | 2026 | USA | 0.50 | 1 | -0.28 | 20 | -5.60 | | | Wen, Tommy | | | 1945 | USA | 0.50 | 1 | -0.36 | 20 | -7.20 | | | Gardezi, Arsal | | | 2007 | USA | 1.00 | 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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