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Individual Calculations September 2009 |
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| Erdei, Andras A Total change: -26.70 | |   |
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| 2nd New York International | New York, NY | USA | 2009-06-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2269 | 2159 | 1.00 | 4 | -0.45 | 15 | -6.75 | |
|  Esserman, Marc R | | | 2391 | USA | 0.00 | 1 | -0.21 | 15 | -3.15 | |  Molner, Mackenzie | | | 2384 | USA | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Hellenschmidt, Andrew | | | 2024 | USA | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Kaufman, Raymond | m | | 2276 | USA | 0.00 | 1 | -0.34 | 15 | -5.10 | |
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) | | | | 37th Annual World Open - Under 2400 Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2058 | 2159 | 3.00 | 7 | -1.33 | 15 | -19.95 | |
| | Shetty, Atulya A | | | 1972 | USA | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Adu, Oladapo O | m | | 2294 | NGR | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Liu, Jennie S | | | 1843 | USA | 0.50 | 1 | -0.37 | 15 | -5.55 | | | Weser, Adam | | | 2098 | USA | 1.00 | 1 | 0.42 | 15 | 6.30 | | | Jiang, Louie | | | 2266 | CAN | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Hua, David A | | | 1853 | USA | 0.00 | 1 | -0.86 | 15 | -12.90 | | | Chan, Julian M | | | 2080 | USA | 0.50 | 1 | -0.11 | 15 | -1.65 | |
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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