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Individual Calculations September 2021 |
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| Ferreiro, Roberto Total change: -4.80 | |   |
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| 4th Annual John T. Irwin National Tournament of Senior State Champions | Cherry Hill, New Jersey | USA | 2021-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2140 | 2279 | 3.50 | 6 | -0.48 | 10 | -4.80 | |
|  Carey, Michael P | | | 1908 | USA | 1.00 | 1 | 0.10 | 10 | 1.00 | |  Gibbins, Wilson K | | | 1992 | USA | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Ginsburg, Mark | m | | 2315 | USA | 0.50 | 1 | 0.05 | 10 | 0.50 | | | Eckert, Doug D | f | | 2172 | USA | 0.00 | 1 | -0.65 | 10 | -6.50 | | | Burnett, Ronald Wayne | m | | 2325 | USA | 0.50 | 1 | 0.06 | 10 | 0.60 | | | Joelson, Daniel | | | 2126 | USA | 0.50 | 1 | -0.20 | 10 | -2.00 | |
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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