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Individual Calculations August 2023 |
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| Ladson, Preston Total change: 44.40 | |   |
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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 |
| 1965 | 1447 | 1.00 | 2 | 0.88 | 40 | 35.20 | |
|  Sharp, Dale Eugene | | | 1801 | USA | 1.00 | 1 | 0.89 | 40 | 35.60 | | | Carswell Jr, Herbert | | | 2128 | USA | 0.00 | 1 | -0.01 | 40 | -0.40 | |
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) | | | NOTE: K factor changed | | 51st annual World Open - U2000 | Philadelphia, PA | USA | 2023-06-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1521 | 1447 | 2.50 | 5 | 0.46 | 20 | 9.20 | |
| | Borse, Tanvi | | | 1299 | USA | 1.00 | 1 | 0.30 | 20 | 6.00 | |  Shukla, Kathan | | | 1692 | USA | 0.00 | 1 | -0.20 | 20 | -4.00 | | | Gupta, Anand | | | 1630 | USA | 1.00 | 1 | 0.74 | 20 | 14.80 | | | Diao, Sujia | | | 1549 | USA | 0.00 | 1 | -0.36 | 20 | -7.20 | | | Gordon, Asher D | | | 1434 | USA | 0.50 | 1 | -0.02 | 20 | -0.40 | |
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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