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Individual Calculations July 2009 |
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| Pruess, David Total change: -11.10 | |   |
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| 9th Annual Sands Regency Reno - Far West Open | Reno, Nevada | USA | 2009-04-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2349 | 2400 | 3.50 | 5 | 0.69 | 10 | 6.90 | |
|  Adelberg, David | | | 2158 | USA | 1.00 | 1 | 0.20 | 10 | 2.00 | |  Gurevich, Dmitry | g | | 2494 | USA | 0.50 | 1 | 0.13 | 10 | 1.30 | | | Khachiyan, Melikset | g | | 2546 | USA | 0.50 | 1 | 0.20 | 10 | 2.00 | | | Langer, Michael | f | | 2260 | USA | 0.50 | 1 | -0.19 | 10 | -1.90 | | | Collyer, Curt D | | | 2289 | USA | 1.00 | 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) | | | | The Copper State International | Mesa, Arizona | USA | 2009-05-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2307 | 2400 | 3.00 | 8 | -1.92 | 10 | -19.20 | |
| | Hortillosa, Andres | | | 2143 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Altounian, Levon | m | | 2454 | USA | 0.00 | 1 | -0.42 | 10 | -4.20 | | | Fernandez, Daniel | m | | 2369 | USA | 0.00 | 1 | -0.54 | 10 | -5.40 | | | Adelberg, David | | | 2158 | USA | 0.50 | 1 | -0.30 | 10 | -3.00 | | | Haskel, Jeffrey | | | 2140 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Ginsburg, Mark | m | | 2380 | USA | 0.50 | 1 | -0.03 | 10 | -0.30 | | | Hansen, Eric | f | | 2398 | CAN | 0.00 | 1 | -0.50 | 10 | -5.00 | | | Sarkar, Justin | m | | 2410 | USA | 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) | | | | 2009 National Open | Las Vegas, Nevada | USA | 2009-06-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2334 | 2400 | 3.00 | 5 | 0.12 | 10 | 1.20 | |
| | Harmon-Vellotti, Luke | | | 2050 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Fressinet, Laurent | g | | 2664 | FRA | 0.00 | 1 | -0.18 | 10 | -1.80 | | | Yanayt, Eugene | f | | 2207 | USA | 1.00 | 1 | 0.25 | 10 | 2.50 | | | Mitkov, Nikola | g | | 2530 | MKD | 0.00 | 1 | -0.32 | 10 | -3.20 | | | Hilton, Jonathan L | | | 2220 | USA | 1.00 | 1 | 0.26 | 10 | 2.60 | |
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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