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Individual Calculations May 2012 |
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| Acosta, Mariano A Total change: -7.35 | |   |
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| 9th North American Amateur Open - 2nd Scott Silvernan Memorial | Skokie, Illinois | USA | 2012-04-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1962 | 2093 | 1.50 | 3 | -0.49 | 15 | -7.35 | |
|  Arond, Dean | | | 1790 | USA | 0.50 | 1 | -0.36 | 15 | -5.40 | |  Sergatskov, Dmitri | | | 1994 | USA | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Szpisjak, Steven J | | | 2102 | 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) | | |
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