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Individual Calculations September 2009 |
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| Anderson, Renard W Total change: 6.00 | |   |
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| 37th Annual World Open - Under 2400 Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2129 | 2192 | 5.50 | 9 | 0.38 | 15 | 5.70 | |
|  Amarasinghe, Prashantha | | | 1930 | SRI | 0.50 | 1 | -0.32 | 15 | -4.80 | |  Jayakumar, Adarsh | | | 1917 | USA | 1.00 | 1 | 0.17 | 15 | 2.55 | | | Lein, Anatoly Y | g | | 2328 | USA | 1.00 | 1 | 0.68 | 15 | 10.20 | | | Nikolayev, Igor A | f | | 2300 | USA | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Rodriguez, Eric | | | 2247 | USA | 0.00 | 1 | -0.42 | 15 | -6.30 | | | Ju, Evan D | f | | 2316 | USA | 0.50 | 1 | 0.17 | 15 | 2.55 | | | De Fotis, Gary C | | | 2128 | USA | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Hua, David A | | | 1853 | USA | 0.50 | 1 | -0.38 | 15 | -5.70 | | | Gutman, Joshua | | | 2138 | USA | 1.00 | 1 | 0.42 | 15 | 6.30 | |
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 |
| 2269 | 2207 | 2.00 | 5 | -0.15 | 15 | -2.25 | |
| | Liou, Yian | | | 2134 | USA | 0.50 | 1 | -0.10 | 15 | -1.50 | | | Hirales, Juan N | | | 2091 | MEX | 0.50 | 1 | -0.16 | 15 | -2.40 | | | Morshedi, Ali | f | | 2290 | USA | 1.00 | 1 | 0.61 | 15 | 9.15 | | | Tate, Emory A | m | | 2303 | USA | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Sevillano, Enrico | m | | 2528 | USA | 0.00 | 1 | -0.13 | 15 | -1.95 | |
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) | | | | 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2278 | 2207 | 1.00 | 2 | 0.17 | 15 | 2.55 | |
| | Smith, Garrett L | | | 2121 | USA | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Bercys, Salvijus | m | | 2434 | USA | 0.00 | 1 | -0.21 | 15 | -3.15 | |
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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