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Individual Calculations September 2009 |
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| Sarkar, Justin Total change: -1.90 | |   |
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| 2nd New York International | New York, NY | USA | 2009-06-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2393 | 2410 | 5.00 | 9 | 0.33 | 10 | 3.30 | |
|  Haskel, Jeffrey | | | 2140 | USA | 1.00 | 1 | 0.17 | 10 | 1.70 | | | Stripunsky, Alexander | g | | 2556 | USA | 0.50 | 1 | 0.20 | 10 | 2.00 | |  Stopa, Jacek | m | | 2471 | POL | 0.50 | 1 | 0.08 | 10 | 0.80 | | | Kacheishvili, Giorgi | g | | 2613 | GEO | 0.00 | 1 | -0.24 | 10 | -2.40 | | | Yang, Darwin | f | | 2231 | USA | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Ravichandran, Siddhar | | | 2303 | IND | 1.00 | 1 | 0.35 | 10 | 3.50 | | | Kraai, Jesse | g | | 2488 | USA | 0.00 | 1 | -0.39 | 10 | -3.90 | | | Figler, Ilye | f | | 2319 | USA | 1.00 | 1 | 0.38 | 10 | 3.80 | | | Gerzhoy, Leonid | m | | 2420 | CAN | 0.00 | 1 | -0.49 | 10 | -4.90 | |
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 |
| 2237 | 2410 | 6.00 | 9 | -0.48 | 10 | -4.80 | |
| | Harris, Neal D | | | 2105 | USA | 1.00 | 1 | 0.14 | 10 | 1.40 | | | Dzera, Victor | | | 2200 | CAN | 1.00 | 1 | 0.23 | 10 | 2.30 | | | Young, Angelo | m | | 2350 | PHI | 0.50 | 1 | -0.08 | 10 | -0.80 | | | Ravichandran, Siddharth | | | 2303 | IND | 0.50 | 1 | -0.15 | 10 | -1.50 | | | Rogers, Norman | f | | 2240 | USA | 1.00 | 1 | 0.28 | 10 | 2.80 | | | Nikolayev, Igor A | f | | 2300 | USA | 0.50 | 1 | -0.15 | 10 | -1.50 | | | Holt, Conrad | | | 2289 | USA | 0.00 | 1 | -0.66 | 10 | -6.60 | | | Yanayt, Eugene | f | | 2207 | USA | 0.50 | 1 | -0.26 | 10 | -2.60 | | | Chernin, Oliver | | | 2137 | USA | 1.00 | 1 | 0.17 | 10 | 1.70 | |
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 |
| 2241 | 2388 | 2.00 | 3 | -0.01 | 10 | -0.10 | |
| | Marshall, Abby | | wf | 2171 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | O`Donnell, Robert | | | 2054 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Kraai, Jesse | g | | 2498 | USA | 0.00 | 1 | -0.35 | 10 | -3.50 | |
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) | | | | 39th Annual Continental Open | Sturbridge, Massachusetts | USA | 2009-08-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2506 | 2388 | 1.00 | 3 | -0.03 | 10 | -0.30 | |
| | Kudrin, Sergey | g | | 2578 | USA | 0.50 | 1 | 0.25 | 10 | 2.50 | | | Yudasin, Leonid G | g | | 2554 | ISR | 0.00 | 1 | -0.28 | 10 | -2.80 | | | Paschall, William | m | | 2385 | USA | 0.50 | 1 | 0.00 | 10 | 0.00 | |
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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