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Individual Calculations September 2011 |
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| Li, Brian S Total change: 8.70 | |   |
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| 2011 North American Youth Championship - U16 Open | Tarrytown, New York | USA | 2011-06-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2112 | 2006 | 1.50 | 4 | 0.07 | 30 | 2.10 | |
|  Gusev, Nikita | | | 2066 | CAN | 0.50 | 1 | 0.08 | 30 | 2.40 | |  Katz, Alexander R | | | 2158 | USA | 0.50 | 1 | 0.20 | 30 | 6.00 | | | Sen, Samir | | | 2133 | USA | 0.50 | 1 | 0.17 | 30 | 5.10 | | | Chiang, Michael | | | 2092 | USA | 0.00 | 1 | -0.38 | 30 | -11.40 | |
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 - U2200 Section | Philadelphia, Pennsylvania | USA | 2011-06-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2089 | 2006 | 1.00 | 2 | 0.22 | 30 | 6.60 | |
| | Lee, Nathan Y | | | 2133 | USA | 0.00 | 1 | -0.33 | 30 | -9.90 | | | Csima, Jeffrey J | | | 2045 | CAN | 1.00 | 1 | 0.55 | 30 | 16.50 | |
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) | | |
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