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Individual Calculations July 2009 |
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| Collyer, Curt D Total change: 4.80 | |   |
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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 |
| 2296 | 2289 | 3.50 | 6 | 0.54 | 15 | 8.10 | |
|  Naroditsky, Alan J | | | 2120 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Khachiyan, Melikset | g | | 2546 | USA | 0.00 | 1 | -0.18 | 15 | -2.70 | |  Trammell Iii, George | | | 2060 | USA | 1.00 | 1 | 0.21 | 15 | 3.15 | | | Adelberg, David | | | 2158 | USA | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Gurevich, Dmitry | g | | 2494 | USA | 0.50 | 1 | 0.26 | 15 | 3.90 | | | Pruess, David | m | | 2400 | USA | 0.00 | 1 | -0.35 | 15 | -5.25 | |
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 Washington Open | Spokane, Washington | USA | 2009-05-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2235 | 2289 | 1.50 | 3 | -0.22 | 15 | -3.30 | |
| | Rupel, David | | | 2107 | USA | 0.50 | 1 | -0.24 | 15 | -3.60 | | | Chen, Howard | | | 2189 | USA | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Donaldson, John | m | | 2409 | USA | 0.50 | 1 | 0.16 | 15 | 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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