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Individual Calculations October 2008 |
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| Sevillano, Enrico Total change: 7.20 | |   |
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| 48th Annual Pacific Southwest Open | Los Angeles, CA | USA | 2008-07-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2299 | 2505 | 2.00 | 3 | -0.25 | 10 | -2.50 | |
|  Chen, Francis | | | 2167 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | |  Peters, Jack | m | | 2408 | USA | 0.50 | 1 | -0.13 | 10 | -1.30 | | | Taylor, Timothy W | m | | 2322 | USA | 0.50 | 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) | | | | 13th Pacific Coast Open | Agoura Hills, California | USA | 2008-07-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2437 | 2505 | 2.00 | 3 | 0.26 | 10 | 2.60 | |
| | Hermansen, Ron | | | 2244 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Erenburg, Sergey | g | | 2563 | ISR | 0.50 | 1 | 0.08 | 10 | 0.80 | | | Khachiyan, Melikset | g | | 2504 | USA | 0.50 | 1 | 0.00 | 10 | 0.00 | |
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) | | | | 109th Annual US Open | Dallas, Texas | USA | 2008-08-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2293 | 2505 | 6.00 | 7 | 0.74 | 10 | 7.40 | |
| | Pamatmat, Jarod M | | | 2155 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Greanias, Steven D | | | 2155 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Yermolinsky, Alex | g | | 2530 | USA | 0.50 | 1 | 0.03 | 10 | 0.30 | | | Blanco, Alvaro | m | | 2332 | MEX | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Battaglini, Gabriel | | | 2341 | FRA | 1.00 | 1 | 0.28 | 10 | 2.80 | | | Mulyar, Michael A | m | | 2382 | USA | 0.50 | 1 | -0.17 | 10 | -1.70 | | | Vaidya, Chaitanya | | | 2155 | IND | 1.00 | 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) | | | | Southern California Championship | Los Angeles, CA | USA | 2008-08-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2316 | 2505 | 5.00 | 7 | -0.09 | 10 | -0.90 | |
| | Matikozyan, Andranik | m | | 2470 | ARM | 0.00 | 1 | -0.55 | 10 | -5.50 | | | Lawrence, Danyul | | | 2155 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Peters, Jack | m | | 2408 | USA | 1.00 | 1 | 0.37 | 10 | 3.70 | | | Kretchetov, Alexandre | f | | 2355 | RUS | 1.00 | 1 | 0.30 | 10 | 3.00 | | | Landaw, Julian W | | | 2246 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Tanaka, Christian | | | 2155 | USA | 0.00 | 1 | -0.89 | 10 | -8.90 | | | Lakdawala, Cyrus F | m | | 2424 | USA | 1.00 | 1 | 0.39 | 10 | 3.90 | |
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) | | | | 30th Annual Southern California Open | Temecula, California | USA | 2008-08-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2376 | 2505 | 2.00 | 3 | 0.06 | 10 | 0.60 | |
| | Khachiyan, Melikset | g | | 2504 | USA | 0.50 | 1 | 0.00 | 10 | 0.00 | | | Matikozyan, Andranik | m | | 2470 | ARM | 0.50 | 1 | -0.05 | 10 | -0.50 | | | Tanaka, Christian | | | 2155 | USA | 1.00 | 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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