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Individual Calculations July 2013 |
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| Rizzitano, James A Total change: 8.00 | |   |
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| 82nd Massachusetts Open | Marlboro, Massachusetts | USA | 2013-05-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2315 | 2307 | 3.00 | 6 | 0.07 | 10 | 0.70 | |
|  Salomon, Brian D | | | 2067 | USA | 1.00 | 1 | 0.20 | 10 | 2.00 | |  Martirosov, Vadim | | | 2231 | USA | 1.00 | 1 | 0.40 | 10 | 4.00 | | | Vigorito, David | m | | 2429 | USA | 0.50 | 1 | 0.17 | 10 | 1.70 | | | Ivanov, Alexander | g | | 2529 | USA | 0.00 | 1 | -0.22 | 10 | -2.20 | | | Wang, Andrew C | | | 2165 | USA | 0.50 | 1 | -0.19 | 10 | -1.90 | | | Foygel, Igor | m | | 2468 | USA | 0.00 | 1 | -0.29 | 10 | -2.90 | |
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) | | | | 2013 US Senior Open | Tarrytown, New York | USA | 2013-05-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2087 | 2307 | 3.00 | 3 | 0.73 | 10 | 7.30 | |
| | Parham, Bernard | | | 1907 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Haessler, Carl A | | | 2174 | USA | 1.00 | 1 | 0.32 | 10 | 3.20 | | | Treger, Yefim | | | 2181 | USA | 1.00 | 1 | 0.33 | 10 | 3.30 | | | * 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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