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Individual Calculations September 2009 |
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| Iwamoto, Takashi Total change: -7.95 | |   |
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| Southern California Championship Candidates | Garden Grove, California | USA | 2009-06-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2091 | 2260 | 1.00 | 2 | -0.44 | 15 | -6.60 | |
|  Lawrence, Danyul | | | 2075 | USA | 1.00 | 1 | 0.26 | 15 | 3.90 | |  He, Tianyi | | | 2107 | USA | 0.00 | 1 | -0.70 | 15 | -10.50 | |
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) | | | | 49th Annual Pacific Southwest Open | Los Angeles, California | USA | 2009-07-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2220 | 2260 | 1.00 | 2 | -0.09 | 15 | -1.35 | |
| | Peters, Jack | m | | 2385 | USA | 0.00 | 1 | -0.33 | 15 | -4.95 | | | Alonso, Francisco | | | 2054 | USA | 1.00 | 1 | 0.24 | 15 | 3.60 | |
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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