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Individual Calculations August 2017 |
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| O`connor, Derek Total change: 7.20 | |   |
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| Summer 2017 Tuesday Night Marathon | San Francisco, California | USA | 2017-05-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2072 | 2175 | 6.00 | 7 | 1.70 | 20 | 34.00 | |
|  Babayan, Gagik | | | 1796 | USA | 1.00 | 1 | 0.09 | 20 | 1.80 | |  Maser, Thomas F | | | 1910 | USA | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Shaw, Tenzing | | | 2231 | USA | 0.50 | 1 | 0.08 | 20 | 1.60 | | | Uzzaman, Ashik | | | 1936 | USA | 1.00 | 1 | 0.20 | 20 | 4.00 | | | Winslow, Elliott C | m | | 2205 | USA | 1.00 | 1 | 0.54 | 20 | 10.80 | | | Diaz, Conrado | | | 2261 | PHI | 0.50 | 1 | 0.12 | 20 | 2.40 | | | Fuentes, Romulo C | | | 2167 | USA | 1.00 | 1 | 0.49 | 20 | 9.80 | |
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) | | | | GM Marcel Sisniega Marathon | Berkeley, California | USA | 2017-06-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1946 | 2206 | 5.00 | 6 | 0.23 | 20 | 4.60 | |
| | Erdenebileg, Matthew Erkhes | | | 1806 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Acosta, Anthony Robert | | | 1806 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Kim, Isaiah | | | 1935 | USA | 0.50 | 1 | -0.33 | 20 | -6.60 | | | Poehlmann, Roger | | | 2209 | USA | 0.50 | 1 | 0.00 | 20 | 0.00 | | | Viswanath Natraj, | | | 2017 | AUS | 1.00 | 1 | 0.25 | 20 | 5.00 | | | Maser, Thomas F | | | 1905 | USA | 1.00 | 1 | 0.15 | 20 | 3.00 | | | * 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) | | | | 2017 Sacramento Chess Championship | Sacramento, California | USA | 2017-07-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2194 | 2206 | 2.00 | 5 | -0.60 | 20 | -12.00 | |
| | Weideman, Thomas | | | 1986 | USA | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Doyle, Bryon J | | | 2107 | USA | 0.50 | 1 | -0.14 | 20 | -2.80 | | | Eren, Baran | | | 2143 | TUR | 0.00 | 1 | -0.59 | 20 | -11.80 | | | Bick, Gabriel J | | | 2286 | USA | 0.50 | 1 | 0.11 | 20 | 2.20 | | | Sevillano, Enrico | g | | 2450 | USA | 0.00 | 1 | -0.20 | 20 | -4.00 | |
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) | | | | 2017 Peoples Tournament | Berkeley, California | USA | 2017-07-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1844 | 2206 | 3.50 | 5 | -0.97 | 20 | -19.40 | |
| | Canessa, John | | | 1837 | USA | 0.50 | 1 | -0.40 | 20 | -8.00 | | | Lu, Yixiang | | | 1849 | USA | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Kolay, Alex | | | 1922 | USA | 0.00 | 1 | -0.84 | 20 | -16.80 | | | Tang, Michael | | | 1806 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Li, Eric | | | 1806 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | * 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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