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Individual Calculations September 2009 |
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| Landaw, Julian W Total change: -19.35 | |   |
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| Southern California Championship Candidates | Garden Grove, California | USA | 2009-06-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2141 | 2286 | 2.00 | 4 | -0.74 | 15 | -11.10 | |
|  Stevens, Lawrence | | | 2089 | USA | 1.00 | 1 | 0.25 | 15 | 3.75 | |  Yee, Michael | | | 2078 | USA | 1.00 | 1 | 0.23 | 15 | 3.45 | | | He, Tianyi | | | 2107 | USA | 0.00 | 1 | -0.73 | 15 | -10.95 | | | Reynolds, Robert I | f | | 2290 | USA | 0.00 | 1 | -0.49 | 15 | -7.35 | |
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) | | | | 49th Annual Pacific Southwest Open | Los Angeles, California | USA | 2009-07-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2217 | 2291 | 3.50 | 5 | 0.57 | 15 | 8.55 | |
| | Hough, Randall D | | | 1992 | USA | 1.00 | 1 | 0.15 | 15 | 2.25 | | | Banawa, Joel | f | | 2340 | USA | 0.50 | 1 | 0.07 | 15 | 1.05 | | | Abrahamyan, Tatev | | wf | 2273 | USA | 1.00 | 1 | 0.47 | 15 | 7.05 | | | Peters, Jack | m | | 2385 | USA | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Kavutskiy, Konstantin | | | 2094 | USA | 0.50 | 1 | -0.25 | 15 | -3.75 | |
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) | | | | 14th Annual Pacific Coast Open | Agoura Hills, California | USA | 2009-07-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2173 | 2291 | 1.50 | 4 | -1.12 | 15 | -16.80 | |
| | Stevens, Lawrence | | | 2089 | USA | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Manukyan, Garush | | | 2317 | ARM | 0.00 | 1 | -0.46 | 15 | -6.90 | | | Gutman, Joshua | | | 2153 | USA | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Liou, Yian | | | 2134 | USA | 0.00 | 1 | -0.71 | 15 | -10.65 | |
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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