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Individual Calculations April 2009 |
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| Esserman, Marc R Total change: 45.75 | |   |
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| 2008 Berkeley International | Berkeley, California | USA | 2008-12-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2460 | 2348 | 4.50 | 9 | 1.31 | 15 | 19.65 | |
|  Friedel, Joshua E | g | | 2497 | USA | 1.00 | 1 | 0.70 | 15 | 10.50 | |  Sharavdorj, Dashze | g | | 2442 | MGL | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Izoria, Zviad | g | | 2610 | GEO | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Bhat, Vinay S | g | | 2497 | USA | 0.50 | 1 | 0.20 | 15 | 3.00 | | | Krush, Irina | m | wg | 2452 | USA | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Sarkar, Justin | m | | 2451 | USA | 0.50 | 1 | 0.14 | 15 | 2.10 | | | Pruess, David | m | | 2422 | USA | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Kacheishvili, Gior | g | | 2572 | GEO | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Haessel, Dale R | f | | 2199 | CAN | 0.50 | 1 | -0.20 | 15 | -3.00 | |
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) | | | | 41st Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2323 | 2345 | 4.50 | 7 | 0.80 | 15 | 12.00 | |
| | Guevara, Robert | | | 2103 | USA | 1.00 | 1 | 0.20 | 15 | 3.00 | | | Kis, Lorand B | | | 2181 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Smith, Bryan G | m | | 2462 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Kudrin, Sergey | g | | 2561 | USA | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Ellenbogen, Michael J | | | 2139 | USA | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Zenyuk, Iryna | c | wm | 2237 | USA | 1.00 | 1 | 0.35 | 15 | 5.25 | | | Shabalov, Alexander | g | | 2578 | USA | 0.00 | 1 | -0.21 | 15 | -3.15 | |
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 World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2110 | 2345 | 1.00 | 2 | -0.55 | 15 | -8.25 | |
| | Parry, Matt J | | | 2225 | USA | 0.00 | 1 | -0.66 | 15 | -9.90 | | | Shumowitz, Marvin | | | 1995 | USA | 1.00 | 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) | | | | 18th Annual Eastern Class Championships | Sturbridge, Massachusetts | USA | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2345 | 2345 | 4.00 | 5 | 1.49 | 15 | 22.35 | |
| | Mac Intyre, Paul | f | | 2281 | USA | 0.50 | 1 | -0.09 | 15 | -1.35 | | | Harris, David | | | 2081 | USA | 1.00 | 1 | 0.18 | 15 | 2.70 | | | Kudrin, Sergey | g | | 2561 | USA | 0.50 | 1 | 0.28 | 15 | 4.20 | | | Cherniack, Alex | | | 2222 | USA | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Shabalov, Alexander | g | | 2578 | USA | 1.00 | 1 | 0.79 | 15 | 11.85 | |
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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