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Individual Calculations September 2022 |
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| Olson, David R Total change: 4.40 | |   |
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| 2nd Peter Grey Memorial Tuesday Night Marathon - u1800 Round 4-7 | San Francisco, California | USA | 2022-08-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1319 | 1230 | 1.00 | 2 | 0.22 | 20 | 4.40 | |
|  Serra, Owen | | | 1186 | USA | 1.00 | 1 | 0.44 | 20 | 8.80 | |  Starr, Albert Martin | | | 1451 | USA | 0.00 | 1 | -0.22 | 20 | -4.40 | |
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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