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Individual Calculations May 2011 |
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| O`Brien, Matthew J Total change: -2.50 | |   |
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| 2011 World Amateur Team & US Team East | Parsippany, New Jersery | USA | 2011-02-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2205 | 1871 | 0.50 | 3 | 0.10 | 25 | 2.50 | |
|  Corke, Anya S | | wg | 2257 | ENG | 0.00 | 1 | -0.09 | 25 | -2.25 | | | Hansen, Carsten | f | | 2271 * | DEN | 0.00 | 1 | -0.08 | 25 | -2.00 | |  Fitzko, Mitchell | | | 2086 | USA | 0.50 | 1 | 0.27 | 25 | 6.75 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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) | | | | 2nd Annual Philadelphia Open | Philadelphia, Pennsylvania | USA | 2011-04-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1994 | 1871 | 3.00 | 9 | -0.20 | 25 | -5.00 | |
| | Tom, George | | | 2007 | USA | 0.00 | 1 | -0.32 | 25 | -8.00 | | | Mo, Kevin | | | 2064 | USA | 0.50 | 1 | 0.25 | 25 | 6.25 | | | Aramil, William J | | | 2271 * | USA | 0.00 | 1 | -0.08 | 25 | -2.00 | | | Gutierrez, Paloma | | wm | 2119 | ESP | 0.00 | 1 | -0.19 | 25 | -4.75 | | | Alvarez, Tirso | | | 1620 | USA | 1.00 | 1 | 0.19 | 25 | 4.75 | | | Gershenov, Ben | | | 2072 | USA | 0.00 | 1 | -0.24 | 25 | -6.00 | | | Sandager, Stephen | | | 2164 | USA | 0.00 | 1 | -0.15 | 25 | -3.75 | | | Reis, Virginia L | | | 1835 | BRA | 0.50 | 1 | -0.05 | 25 | -1.25 | | | Dong, Alice | | | 1793 | USA | 1.00 | 1 | 0.39 | 25 | 9.75 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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