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Individual Calculations November 2009 |
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| Saperstein, Craig Total change: 21.15 | |   |
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| 41st Annual Atlantic Open | Washington DC | USA | 2009-08-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2168 | 1870 | 2.00 | 5 | 1.24 | 15 | 18.60 | |
|  Rosario, Salvador | | | 2175 | USA | 0.50 | 1 | 0.36 | 15 | 5.40 | |  Strenzwilk, Denis F | | | 2072 | USA | 1.00 | 1 | 0.76 | 15 | 11.40 | | | Shibut, Macon A | f | | 2267 | USA | 0.50 | 1 | 0.42 | 15 | 6.30 | | | Reichstein, Boris | f | | 2152 | USA | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Samuelson, Andrew | | | 2173 | USA | 0.00 | 1 | -0.14 | 15 | -2.10 | |
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) | | | | 73rd Annual Virginia Closed State Championship | Glen Allen, Virginia | USA | 2009-09-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2054 | 1918 | 1.50 | 4 | 0.09 | 15 | 1.35 | |
| | Wu, Katherine | | | 1827 | USA | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Gorman, Dov | f | | 2284 | USA | 0.00 | 1 | -0.10 | 15 | -1.50 | | | Mc Kenna, Geoffrey | | | 2221 | USA | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Carroll, William | | | 1883 | USA | 0.50 | 1 | -0.05 | 15 | -0.75 | |
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) | | | | Kingstowne Fall Festival | Alexandria, Virginia | USA | 2009-10-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1979 | 1918 | 0.50 | 1 | 0.08 | 15 | 1.20 | |
| | Jablon, Stephen E | | | 1979 | USA | 0.50 | 1 | 0.08 | 15 | 1.20 | |
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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