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Individual Calculations September 2009 |
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| Haskel, Jeffrey Total change: 66.90 | |   |
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| 2nd New York International | New York, NY | USA | 2009-06-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2345 | 2140 | 4.50 | 9 | 2.28 | 15 | 34.20 | |
|  Sarkar, Justin | m | | 2410 | USA | 0.00 | 1 | -0.17 | 15 | -2.55 | |  Kaufman, Raymond | m | | 2276 | USA | 0.50 | 1 | 0.18 | 15 | 2.70 | | | Getz, Alec | f | | 2229 | USA | 0.50 | 1 | 0.12 | 15 | 1.80 | | | Zenyuk, Iryna | c | wm | 2305 | USA | 1.00 | 1 | 0.72 | 15 | 10.80 | | | Krush, Irina | m | wg | 2452 | USA | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Yang, Darwin | f | | 2231 | USA | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Yeager, Daniel A | f | | 2372 | USA | 0.50 | 1 | 0.29 | 15 | 4.35 | | | Braylovskiy, Grigory | | | 2358 | USA | 1.00 | 1 | 0.78 | 15 | 11.70 | | | Stopa, Jacek | m | | 2471 | POL | 0.00 | 1 | -0.12 | 15 | -1.80 | |
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) | | | | 2009 US Class Championships | Boca Raton, Florida | USA | 2009-07-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2285 | 2186 | 2.50 | 4 | 0.94 | 15 | 14.10 | |
| | Goss, Mel H | | | 2141 | USA | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Becerra, Julio J | g | | 2557 | USA | 0.00 | 1 | -0.10 | 15 | -1.50 | | | Boas, Toby | | | 2183 | USA | 1.00 | 1 | 0.50 | 15 | 7.50 | | | La Rota, Fabio | f | | 2257 | USA | 0.50 | 1 | 0.10 | 15 | 1.50 | |
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 |
| 2375 | 2186 | 1.50 | 3 | 0.62 | 15 | 9.30 | |
| | Wasiolek, Rory E | | | 2098 | USA | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Sevillano, Enrico | m | | 2528 | USA | 0.50 | 1 | 0.38 | 15 | 5.70 | | | Kraai, Jesse | g | | 2498 | USA | 0.00 | 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) | | | | Denker Tournament of High School Champions | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2094 | 2186 | 2.50 | 3 | 0.62 | 15 | 9.30 | |
| | Magness, Trevor S | | | 2105 | USA | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Ng, Andrew | | | 2113 | USA | 1.00 | 1 | 0.40 | 15 | 6.00 | | | Huang, Vincent | | | 2063 | USA | 1.00 | 1 | 0.33 | 15 | 4.95 | |
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) | | |
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