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Individual Calculations September 2011 |
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| Britt, Jeff Total change: -27.60 | |   |
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| 2011 FIDE Continental America's Amateur Chess Championship | Rosemont, Illinois | USA | 2011-07-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2052 | 1909 | 0.00 | 2 | -0.64 | 30 | -19.20 | |
|  Blackman, Justin | | | 2152 | BAR | 0.00 | 1 | -0.20 | 30 | -6.00 | | | Liang, Adream | | | 1952 | USA | 0.00 | 1 | -0.44 | 30 | -13.20 | |
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) | | | | 6th North American Amateur Open | Skokie, Illinois | USA | 2011-08-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1687 | 1909 | 0.50 | 1 | -0.28 | 30 | -8.40 | |
|  Craigmile, Charles | | | 1687 | USA | 0.50 | 1 | -0.28 | 30 | -8.40 | |
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) | | |
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