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Individual Calculations September 2011 |
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| Breckenridge, Steve Total change: -10.95 | |   |
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| 51st Annual Pacific Southwest Open | Los Angeles, California | USA | 2011-07-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2213 | 2220 | 0.00 | 2 | -1.02 | 15 | -15.30 | |
|  Peters, Jack | m | | 2377 | USA | 0.00 | 1 | -0.29 | 15 | -4.35 | |  Nita, Marian N | | | 2049 | USA | 0.00 | 1 | -0.73 | 15 | -10.95 | |
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 Pacific Coast Open | Agoura Hills, California | USA | 2011-07-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2187 | 2220 | 1.50 | 3 | -0.12 | 15 | -1.80 | |
| | Matikozyan, Andranik | m | | 2451 | ARM | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Xue, Robert | | | 1939 | USA | 1.00 | 1 | 0.16 | 15 | 2.40 | | | Sevian, Samuel | | | 2172 | USA | 0.50 | 1 | -0.07 | 15 | -1.05 | |
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) | | | | Portland Chess Club Centennial Open | Portland, Oregon | USA | 2011-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1990 | 2220 | 3.50 | 4 | 0.41 | 15 | 6.15 | |
| | Davis, Mikeal | | | 1820 * | USA | 0.50 | 1 | -0.42 | 15 | -6.30 | | | Feng, Roland | | | 2019 | USA | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Chan, James | | | 1988 | CAN | 1.00 | 1 | 0.21 | 15 | 3.15 | | | May, Andy P | | | 2133 | USA | 1.00 | 1 | 0.38 | 15 | 5.70 | | | * 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) | | |
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