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Individual Calculations September 2009 |
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| Amarasinghe, Prashantha Total change: 7.65 | |   |
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| 37th Annual World Open - Under 2400 Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2148 | 1930 | 2.50 | 8 | 0.67 | 15 | 10.05 | |
|  Anderson, Renard W | f | | 2192 | USA | 0.50 | 1 | 0.32 | 15 | 4.80 | |  Holt, Conrad | | | 2280 | USA | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Fink Jr, Stanley W | | | 2148 | USA | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Strenzwilk, Denis | | | 2079 | USA | 0.50 | 1 | 0.20 | 15 | 3.00 | | | Storch, Lawrence | | | 2153 | USA | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Kis, Lorand | | | 2189 | USA | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Szalay, Karoly | | | 2050 | CAN | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Sundar, Avinaash | | | 2093 | CAN | 1.00 | 1 | 0.72 | 15 | 10.80 | |
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) | | | | 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2116 | 1946 | 0.50 | 2 | -0.16 | 15 | -2.40 | |
| | Gurevich, Dmitry | g | | 2346 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Young, Steven D | | | 1886 | USA | 0.50 | 1 | -0.08 | 15 | -1.20 | | | * 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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