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Individual Calculations December 2018 |
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| Costello, Alexander Total change: 31.20 | |   |
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| 54th Annual American Open | Costa Mesa, California | USA | 2018-11-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2159 | 2200 | 4.00 | 6 | 0.78 | 40 | 31.20 | |
|  Mahajan, Rushaan | c | | 1963 | USA | 1.00 | 1 | 0.20 | 40 | 8.00 | |  Krishnakumar, Sriram | c | | 1800 * | USA | 0.00 | 1 | -0.92 | 40 | -36.80 | | | Somalwar, Anaiy | | | 2088 | USA | 1.00 | 1 | 0.35 | 40 | 14.00 | | | Pourkashiyan, Atousa | | wg | 2333 | IRI | 1.00 | 1 | 0.68 | 40 | 27.20 | | | Chua, Alexander | f | | 2316 | USA | 1.00 | 1 | 0.66 | 40 | 26.40 | | | Bryant, John Daniel | m | | 2453 | USA | 0.00 | 1 | -0.19 | 40 | -7.60 | | | * 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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