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Individual Calculations October 2008 |
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| Kaufman, Raymond Total change: -39.75 | |   |
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| 5th George Washington Open | Springfield, Virginia | USA | 2008-06-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2009 | 2359 | 0.00 | 1 | -0.89 | 15 | -13.35 | |
|  Shapiro, Jonathan | | | 2009 | USA | 0.00 | 1 | -0.89 | 15 | -13.35 | |
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) | | | | 36th Annual World Open (U2400 Section) | Philadelphia, Pennsylvania | USA | 2008-06-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2218 | 2359 | 4.00 | 8 | -1.50 | 15 | -22.50 | |
| | Gogte, Yashodhan S | | | 2203 | IND | 0.50 | 1 | -0.21 | 15 | -3.15 | |  Savage, Allan G | f | | 2168 | USA | 0.50 | 1 | -0.25 | 15 | -3.75 | | | Ellenbogen, Michael | | | 2174 | USA | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Hu, Zhi-Ya | | | 2210 | USA | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Formanek, Edward W | m | | 2264 | USA | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Acor, Corey | | | 2246 | USA | 0.50 | 1 | -0.15 | 15 | -2.25 | | | Adu, Oladapo O | m | | 2294 | NGR | 0.00 | 1 | -0.59 | 15 | -8.85 | | | Lu, Edward J | | | 2185 | USA | 0.00 | 1 | -0.73 | 15 | -10.95 | |
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) | | | | 40th Annual Atlantic Open | Washington, DC | USA | 2008-08-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2291 | 2360 | 1.50 | 3 | -0.26 | 15 | -3.90 | |
| | Hutchinson, Antoine | | | 2193 | USA | 0.50 | 1 | -0.22 | 15 | -3.30 | | | Samuelson, Andrew | | | 2128 | USA | 1.00 | 1 | 0.21 | 15 | 3.15 | | | Stripunsky, Alexander | g | | 2553 | USA | 0.00 | 1 | -0.25 | 15 | -3.75 | |
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) | | |
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