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Individual Calculations September 2010 |
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| Zhang, Eric Total change: 59.70 | |   |
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| 50th Annual Pacific Southwest Open | Los Angeles, California | USA | 2010-07-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2028 | 1924 | 3.00 | 5 | 1.13 | 15 | 16.95 | |
|  Liou, Yian | | | 2211 | USA | 0.00 | 1 | -0.16 | 15 | -2.40 | |  Lazarus, Barry J | | | 1819 | USA | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Gunawan, Cheston | | | 1889 | USA | 0.50 | 1 | -0.05 | 15 | -0.75 | | | West, Vanessa A | | | 2063 | USA | 1.00 | 1 | 0.69 | 15 | 10.35 | | | Kavutskiy, Konstantin | | | 2157 | USA | 0.50 | 1 | 0.29 | 15 | 4.35 | |
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) | | | | 15th Annual Pacific Coast Open | Agoura Hills, California | USA | 2010-07-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2121 | 1924 | 2.00 | 5 | 0.66 | 15 | 9.90 | |
| | Matikozyan, Andranik | m | | 2324 * | ARM | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Tanaka, Christian | | | 2127 | USA | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Alonso, Francisco | | | 2045 | USA | 1.00 | 1 | 0.66 | 15 | 9.90 | | | Anderson, Douglas | | | 1915 | USA | 0.50 | 1 | -0.01 | 15 | -0.15 | | | Moussa, Alaa-Addin | c | | 2196 | PLE | 0.50 | 1 | 0.33 | 15 | 4.95 | | | * 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) | | | | 111th Annual US Open - Jerry Hanken Memorial | Irvine, California | USA | 2010-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2171 | 1924 | 4.00 | 8 | 2.19 | 15 | 32.85 | |
| | Hua, Margaret M | | | 1972 | USA | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Parmet, Daniel E | | | 1904 | USA | 1.00 | 1 | 0.47 | 15 | 7.05 | | | Ginsburg, Mark | m | | 2324 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Taylor, Timothy W | m | | 2324 * | USA | 1.00 | 1 | 0.92 | 15 | 13.80 | | | Chen, Howard J | | | 2257 | USA | 1.00 | 1 | 0.88 | 15 | 13.20 | | | Cornejo, Max | m | | 2324 * | PER | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Carreto, Giovanni | c | | 2225 | MEX | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Robertson, Matthew | | | 2038 | USA | 0.00 | 1 | -0.34 | 15 | -5.10 | | | * 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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