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Individual Calculations September 2009 |
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| Storch, Lawrence Total change: -16.95 | |   |
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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 |
| 2039 | 2153 | 3.00 | 6 | -0.82 | 15 | -12.30 | |
|  Nikolayev, Igor A | f | | 2300 | USA | 0.00 | 1 | -0.30 | 15 | -4.50 | |  De Fotis, Gary C | | | 2128 | USA | 0.50 | 1 | -0.03 | 15 | -0.45 | | | Finney, Stuart S | | | 1939 | USA | 0.00 | 1 | -0.77 | 15 | -11.55 | | | Amarasinghe, Prashantha | | | 1930 | SRI | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Sundar, Avinaash | | | 2093 | CAN | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Liu, Jennie S | | | 1843 | USA | 1.00 | 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) | | | | 17th Annual Southern Open | Kissimmee, Florida | USA | 2009-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2214 | 2146 | 0.50 | 2 | -0.31 | 15 | -4.65 | |
| | Cruz, Dario | | | 2245 | CUB | 0.50 | 1 | 0.14 | 15 | 2.10 | | | Boas, Toby | | | 2183 | USA | 0.00 | 1 | -0.45 | 15 | -6.75 | |
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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