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Individual Calculations September 2009 |
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| Sevillano, Enrico Total change: -16.00 | |   |
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| 49th Annual Pacific Southwest Open | Los Angeles, California | USA | 2009-07-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2412 | 2528 | 2.50 | 3 | 0.54 | 10 | 5.40 | |
|  Peters, Jack | m | | 2385 | USA | 1.00 | 1 | 0.31 | 10 | 3.10 | |  Khachiyan, Melikset | g | | 2516 | USA | 0.50 | 1 | -0.02 | 10 | -0.20 | | | Bryant, John Daniel | | | 2335 | USA | 1.00 | 1 | 0.25 | 10 | 2.50 | |
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) | | | | 14th Annual Pacific Coast Open | Agoura Hills, California | USA | 2009-07-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2229 | 2528 | 4.00 | 6 | -0.98 | 10 | -9.80 | |
| | Yee, Michael A | | | 2128 * | USA | 0.00 | 1 | -0.92 | 10 | -9.20 | | | Sandberg, Evan M | | | 2146 | USA | 1.00 | 1 | 0.09 | 10 | 0.90 | | | Popova, Elena | | | 2128 * | RUS | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Yurenok, Sergey | | | 2248 | USA | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Khachiyan, Melikset | g | | 2516 | USA | 0.00 | 1 | -0.52 | 10 | -5.20 | | | Anderson, Renard W | f | | 2207 | USA | 1.00 | 1 | 0.13 | 10 | 1.30 | | | * 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 |
| 2271 | 2528 | 6.00 | 9 | -1.16 | 10 | -11.60 | |
| | Wu, Darren P | | | 2128 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Keating, Robert F | | | 2128 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Yu, Corbin Zachary | | | 2207 | USA | 1.00 | 1 | 0.13 | 10 | 1.30 | | | Haskel, Jeffrey | | | 2186 | USA | 0.50 | 1 | -0.38 | 10 | -3.80 | | | Tate, Emory A | m | | 2303 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Ippolito, Dean J | m | | 2455 | USA | 0.50 | 1 | -0.10 | 10 | -1.00 | | | Bercys, Salvijus | m | | 2434 | USA | 0.50 | 1 | -0.13 | 10 | -1.30 | | | Lugo, Blas | m | | 2380 | USA | 0.00 | 1 | -0.70 | 10 | -7.00 | | | Barclay, Kayin | | | 2220 | USA | 0.50 | 1 | -0.36 | 10 | -3.60 | | | * 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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