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Individual Calculations September 2023 |
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| Porth, Adam Total change: -30.80 | |   |
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| 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 |
| 1763 | 1565 | 0.50 | 5 | -0.77 | 40 | -30.80 | |
|  Sage, J Timothy | | | 1870 | USA | 0.00 | 1 | -0.14 | 40 | -5.60 | |  Gavrysh, Leonid | | | 1883 | UKR | 0.00 | 1 | -0.13 | 40 | -5.20 | | | Hobbs, Richard P | | | 1726 | USA | 0.50 | 1 | 0.21 | 40 | 8.40 | | | Elkins, Steve E | | | 1664 | USA | 0.00 | 1 | -0.36 | 40 | -14.40 | | | Fuller Ii, James A | | | 1674 | USA | 0.00 | 1 | -0.35 | 40 | -14.00 | |
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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