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Individual Calculations September 2011 |
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| Colas, Joshua Total change: -15.90 | |   |
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| 2011 North American Youth Championship - U14 Open | Tarrytown, New York | USA | 2011-06-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2163 | 2040 | 0.00 | 2 | -0.67 | 15 | -10.05 | |
|  Shen, Arthur | f | | 2146 | USA | 0.00 | 1 | -0.36 | 15 | -5.40 | |  Bodek, Michael H | | | 2180 | USA | 0.00 | 1 | -0.31 | 15 | -4.65 | |
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) | | | | 39th Annual World Open - U2400 Section | Philadelphia, Pennsylvania | USA | 2011-06-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2084 | 2040 | 2.00 | 4 | 0.24 | 15 | 3.60 | |
| | Goss, Mel H | | | 2084 | USA | 0.00 | 1 | -0.44 | 15 | -6.60 | | | Finneran, Michael | | | 2023 | USA | 1.00 | 1 | 0.48 | 15 | 7.20 | | | Zepeda, Lorena M | | wm | 2185 | ESA | 1.00 | 1 | 0.69 | 15 | 10.35 | | | Wu, Christopher | | | 2044 | 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) | | | | 16th Annual Bradley Open | Windsor Locks, Connecticut | USA | 2011-07-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2151 | 2041 | 1.50 | 3 | 0.36 | 15 | 5.40 | |
| | Castaneda, Andres | | | 2151 | USA | 0.50 | 1 | 0.15 | 15 | 2.25 | | | Shi, Jason | | | 1918 | USA | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Yedidia, Jonathan | m | | 2384 | USA | 0.00 | 1 | -0.12 | 15 | -1.80 | |
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) | | | | 2011 Manhattan Open - U2300 Section | New York, New York | USA | 2011-08-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2047 | 2041 | 0.00 | 2 | -0.99 | 15 | -14.85 | |
| | Fleischman, Eric J | | | 2130 | USA | 0.00 | 1 | -0.38 | 15 | -5.70 | | | Matlin, Anna R | | | 1963 | USA | 0.00 | 1 | -0.61 | 15 | -9.15 | |
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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