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Individual Calculations September 2011 |
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| Williams, Justus D Total change: 4.05 | |   |
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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 |
| 2118 | 2167 | 1.50 | 3 | -0.20 | 15 | -3.00 | |
|  Bodek, Michael H | | | 2180 | USA | 1.00 | 1 | 0.52 | 15 | 7.80 | |  Shen, Arthur | f | | 2146 | USA | 0.00 | 1 | -0.53 | 15 | -7.95 | | | Moon, Kyle | | | 2029 | USA | 0.50 | 1 | -0.19 | 15 | -2.85 | |
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 |
| 2117 | 2167 | 4.50 | 9 | -0.51 | 15 | -7.65 | |
| | Chiang, Jonathan | | | 1793 | USA | 1.00 | 1 | 0.10 | 15 | 1.50 | | | Kleinman, Michael | | | 2195 | CAN | 0.00 | 1 | -0.46 | 15 | -6.90 | | | Vulis, Daniel | | | 2082 | USA | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Inants, Aghasi | | | 2290 | ARM | 0.00 | 1 | -0.33 | 15 | -4.95 | | | Ross, Laura | | wf | 2154 | USA | 0.00 | 1 | -0.52 | 15 | -7.80 | | | Alvarez, Franklin | | | 2156 | DOM | 1.00 | 1 | 0.48 | 15 | 7.20 | | | Miller, Jake S | | | 2042 | USA | 0.50 | 1 | -0.17 | 15 | -2.55 | | | Mateer, Amanda | | wf | 2114 | USA | 0.00 | 1 | -0.57 | 15 | -8.55 | | | Omori, Michael | | | 2225 | USA | 1.00 | 1 | 0.58 | 15 | 8.70 | |
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 Barber K-8 Championship | Orlando, Florida | USA | 2011-07-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2085 | 2182 | 3.50 | 4 | 0.98 | 15 | 14.70 | |
| | Chandran, Kapil | | | 2048 | USA | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Shen, Arthur | f | | 2155 | USA | 1.00 | 1 | 0.46 | 15 | 6.90 | | | Brown, Michael W | | | 2121 | USA | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Karamsetty, Jeevan | | | 2017 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | |
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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