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Individual Calculations September 2017 |
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| Waterfield, John W Total change: 12.20 | |   |
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| 104th British Championships Weekend Open | Llandudno | ENG | 2017-07-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1973 | 1967 | 3.00 | 5 | 0.61 | 20 | 12.20 | |
|  Jamieson, Alexander | | | 1599 | ENG | 1.00 | 1 | 0.10 | 20 | 2.00 | |  Pitcher, John | | | 2216 | ENG | 0.50 | 1 | 0.31 | 20 | 6.20 | | | Villiers, Thomas | | | 2122 | ENG | 0.00 | 1 | -0.29 | 20 | -5.80 | | | Woodward, Tim F | | | 1901 | ENG | 1.00 | 1 | 0.41 | 20 | 8.20 | | | Warren, Alex M | | | 2025 | ENG | 0.50 | 1 | 0.08 | 20 | 1.60 | |
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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