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Individual Calculations September 2009 |
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| Sells, Philip G Total change: 57.60 | |   |
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| 14th Annual Bradley Open | Windsor Locks, Connecticut | USA | 2009-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2128 | 1837 | 1.00 | 4 | 0.36 | 25 | 9.00 | |
|  Weser, Adam | | | 2098 | USA | 1.00 | 1 | 0.82 | 25 | 20.50 | | | Lenderman, Alex | m | | 2237 * | USA | 0.00 | 1 | -0.08 | 25 | -2.00 | |  Prawira, Dennis | | | 2080 | USA | 0.00 | 1 | -0.20 | 25 | -5.00 | | | Tkach, Leonid | | | 2097 | USA | 0.00 | 1 | -0.18 | 25 | -4.50 | | | * 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) | | | | 20th Annual Vermont Resort Open | Stratton Mountain, Vermont | USA | 2009-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2042 | 1837 | 1.00 | 1 | 0.76 | 25 | 19.00 | |
| | Tuhrim, Richard J | | | 2042 | USA | 1.00 | 1 | 0.76 | 25 | 19.00 | |
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) | | | | 15th Annual Northeast Open | Stamford, Connecticut | USA | 2009-08-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2062 | 1837 | 1.50 | 4 | 0.59 | 25 | 14.75 | |
| | Perez-Billinghurst, Ricardo | | | 2109 | USA | 0.00 | 1 | -0.17 | 25 | -4.25 | | | Raghunathan, Yogesh | | | 1884 | USA | 1.00 | 1 | 0.57 | 25 | 14.25 | | | Chernin, Oliver | | | 2137 | USA | 0.00 | 1 | -0.15 | 25 | -3.75 | | | Schwartz, Maxwell | | | 2116 | USA | 0.50 | 1 | 0.34 | 25 | 8.50 | |
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) | | | NOTE: K factor changed | | 39th Annual Continental Open | Sturbridge, Massachusetts | USA | 2009-08-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2204 | 1837 | 1.50 | 5 | 0.99 | 15 | 14.85 | |
| | Zlotnikov, Mikhail | m | | 2237 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Klein, Erez N | f | | 2237 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Vertkin, Sergey | | | 2201 | RUS | 1.00 | 1 | 0.90 | 15 | 13.50 | | | Curdo, John A | f | | 2237 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Aaron, Deepak | | | 2110 | USA | 0.50 | 1 | 0.33 | 15 | 4.95 | | | * 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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