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Individual Calculations August 2023 |
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| Pritchett, Peter W Total change: 31.20 | |   |
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| 13th annual World Open Senior Amateur | Philadelphia, PA | USA | 2023-06-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1820 | 1659 | 2.50 | 4 | 1.21 | 40 | 48.40 | |
|  Sankar, Swaminathan | | | 1272 | USA | 1.00 | 1 | 0.09 | 40 | 3.60 | |  Carswell Jr, Herbert | | | 2128 | USA | 1.00 | 1 | 0.95 | 40 | 38.00 | | | Colding, Ernest P | | | 1985 | USA | 0.00 | 1 | -0.13 | 40 | -5.20 | | | Treger, Yefim | | | 1896 | USA | 0.50 | 1 | 0.30 | 40 | 12.00 | |
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) | | | | 51st annual World Open - U2000 | Philadelphia, PA | USA | 2023-06-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1546 | 1659 | 1.50 | 3 | -0.43 | 40 | -17.20 | |
| | Wong-Godfrey, Emer | | | 1511 | USA | 0.50 | 1 | -0.20 | 40 | -8.00 | | | Holcomb, Emerson L | | | 1712 | USA | 0.00 | 1 | -0.43 | 40 | -17.20 | | | Zhu, Florina | | | 1416 | USA | 1.00 | 1 | 0.20 | 40 | 8.00 | |
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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