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Individual Calculations September 2009 |
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| Becerra, Julio J Total change: -23.80 | |   |
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| 37th Annual World Open - Open Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2422 | 2609 | 4.00 | 8 | -1.87 | 10 | -18.70 | |
|  Getz, Alec | f | | 2259 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | |  Enkhbat, Tegshsuren | m | | 2377 | USA | 0.50 | 1 | -0.29 | 10 | -2.90 | | | Esserman, Marc R | | | 2391 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Smirin, Ilya | g | | 2641 | ISR | 0.00 | 1 | -0.46 | 10 | -4.60 | | | Molner, Mackenzie | | | 2384 | USA | 0.50 | 1 | -0.28 | 10 | -2.80 | | | Arnold, Marc T | m | | 2408 | USA | 1.00 | 1 | 0.24 | 10 | 2.40 | | | Gurevich, Dmitry | g | | 2494 | USA | 0.00 | 1 | -0.66 | 10 | -6.60 | | | Gerzhoy, Leonid | m | | 2420 | CAN | 0.00 | 1 | -0.75 | 10 | -7.50 | |
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) | | | | 2009 US Class Championships | Boca Raton, Florida | USA | 2009-07-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2278 | 2557 | 2.50 | 3 | 0.03 | 10 | 0.30 | |
| | Haskel, Jeffrey | | | 2186 | USA | 1.00 | 1 | 0.10 | 10 | 1.00 | | | La Rota, Fabio | f | | 2257 | USA | 1.00 | 1 | 0.15 | 10 | 1.50 | | | Garcia, Gildardo J | g | | 2390 | COL | 0.50 | 1 | -0.22 | 10 | -2.20 | |
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) | | | | 17th Annual Southern Open | Kissimmee, Florida | USA | 2009-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2240 | 2557 | 2.00 | 3 | -0.55 | 10 | -5.50 | |
| | Heung, Christopher | | | 2157 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Lugo, Blas | m | | 2380 | USA | 0.50 | 1 | -0.23 | 10 | -2.30 | | | Boas, Toby | | | 2183 | USA | 0.50 | 1 | -0.40 | 10 | -4.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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 |
| 2434 | 2557 | 2.00 | 3 | 0.01 | 10 | 0.10 | |
| | Gurevich, Dmitry | g | | 2485 | USA | 0.50 | 1 | -0.10 | 10 | -1.00 | | | Andrews, Todd D | f | | 2337 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Antal, Gergely | m | | 2479 | HUN | 0.50 | 1 | -0.11 | 10 | -1.10 | |
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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