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Individual Calculations April 2009 |
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| Pruess, David Total change: -21.80 | |   |
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| 2008 Berkeley International | Berkeley, California | USA | 2008-12-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2405 | 2422 | 5.00 | 9 | 0.30 | 10 | 3.00 | |
|  Izoria, Zviad | g | | 2610 | GEO | 0.50 | 1 | 0.24 | 10 | 2.40 | |  Kraai, Jesse | g | | 2502 | USA | 1.00 | 1 | 0.61 | 10 | 6.10 | | | Rensch, Daniel M | f | | 2354 | USA | 0.00 | 1 | -0.59 | 10 | -5.90 | | | Haessel, Dale R | f | | 2199 | CAN | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Sharavdorj, Dashze | g | | 2442 | MGL | 0.00 | 1 | -0.47 | 10 | -4.70 | | | Esserman, Marc R | | | 2348 | USA | 0.00 | 1 | -0.60 | 10 | -6.00 | | | Kustar, Sandor | m | | 2356 | HUN | 0.50 | 1 | -0.09 | 10 | -0.90 | | | Naroditsky, Daniel | f | | 2382 | USA | 1.00 | 1 | 0.44 | 10 | 4.40 | | | Krush, Irina | m | wg | 2452 | USA | 1.00 | 1 | 0.54 | 10 | 5.40 | |
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 North American Open | Las vegas, Nevada | USA | 2008-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2146 | 2422 | 3.00 | 5 | -1.15 | 10 | -11.50 | |
| | Brownscombe, Tom | f | | 2196 | USA | 0.00 | 1 | -0.79 | 10 | -7.90 | | | Higgins, Sean K | | | 2178 | USA | 0.00 | 1 | -0.80 | 10 | -8.00 | | | Stein, Jeremy A | | | 2087 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Le, Cau D | | | 2081 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Anderson, Renard W | f | | 2186 | USA | 1.00 | 1 | 0.20 | 10 | 2.00 | |
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) | | | | 16th Annual Western Class Championshipw | Agoura Hills, California | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2242 | 2422 | 1.50 | 4 | -1.40 | 10 | -14.00 | |
| | Von Krogh, Christopher | | | 2218 | USA | 0.50 | 1 | -0.26 | 10 | -2.60 | | | Gutman, Joshua | | | 2133 | USA | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Hansen, Eric | f | | 2376 | CAN | 0.00 | 1 | -0.56 | 10 | -5.60 | | | Lee, Andy C | | | 2240 | USA | 0.00 | 1 | -0.74 | 10 | -7.40 | |
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) | | | | 25e open international de Cappelle | Cappelle la Grande | FRA | 2009-02-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2322 | 2422 | 5.00 | 8 | 0.07 | 10 | 0.70 | |
| | Savchenko, Stanislav | g | | 2571 | UKR | 0.00 | 1 | -0.30 | 10 | -3.00 | | | Tate, Alan | | | 2170 | SCO | 1.00 | 1 | 0.19 | 10 | 1.90 | | | Grandadam, Nicolas | | | 2145 | SUI | 0.50 | 1 | -0.33 | 10 | -3.30 | | | De Verdier, Michael | | | 2174 | SWE | 0.50 | 1 | -0.31 | 10 | -3.10 | | | Aveline, Philippe | | | 2160 | FRA | 1.00 | 1 | 0.18 | 10 | 1.80 | | | David, Alberto | g | | 2603 | LUX | 1.00 | 1 | 0.74 | 10 | 7.40 | | | Shneider, Aleksandr | g | | 2539 | UKR | 0.00 | 1 | -0.34 | 10 | -3.40 | | | Doluhanova, Evgeniya | | wg | 2216 | UKR | 1.00 | 1 | 0.24 | 10 | 2.40 | |
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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