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Individual Calculations August 2017 |
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| Williams, David J Total change: 10.40 | |   |
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| 14th South Wales International Open | Cardiff | WLS | 2017-07-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1666 | 1518 | 3.50 | 9 | 0.52 | 20 | 10.40 | |
|  Van Kemenade, Rudy | | | 1918 * | WLS | 0.50 | 1 | 0.42 | 20 | 8.40 | |  Waterfield, John W | | | 1918 * | WLS | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Chung, Ethan Cheung Jing | | | 1348 | WLS | 1.00 | 1 | 0.28 | 20 | 5.60 | | | Williams, Stephen | | | 1683 | WLS | 0.00 | 1 | -0.28 | 20 | -5.60 | | | Hurn, Robert Aj | | | 1594 | WLS | 0.00 | 1 | -0.40 | 20 | -8.00 | | | Cox, John | | | 1469 | WLS | 0.50 | 1 | -0.07 | 20 | -1.40 | | | Orton, Paul | | | 1615 | WLS | 1.00 | 1 | 0.63 | 20 | 12.60 | | | Thomas, Roy | | | 1742 | WLS | 0.00 | 1 | -0.22 | 20 | -4.40 | | | Williams, Ron | | | 1704 | WLS | 0.50 | 1 | 0.24 | 20 | 4.80 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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