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Individual Calculations January 2019 |
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| Gaffagan, Steven Total change: -39.80 | |   |
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| Fall 2018 Tuesday Night Marathon | San Francisco, California | USA | 2018-10-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1853 | 2034 | 4.50 | 8 | -1.18 | 20 | -23.60 | |
|  Boldi, Nicholas | | | 1634 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Perlov, Alexander | | | 1644 | USA | 0.50 | 1 | -0.41 | 20 | -8.20 | | | Jensen, Christian | | | 1734 | USA | 0.50 | 1 | -0.35 | 20 | -7.00 | | | Gray, William | | | 1883 | USA | 1.00 | 1 | 0.30 | 20 | 6.00 | | | Askin, David | | | 1962 | USA | 0.50 | 1 | -0.10 | 20 | -2.00 | | | Diaz, Conrado | | | 2297 | PHI | 0.00 | 1 | -0.18 | 20 | -3.60 | | | Harris, John | | | 1845 | USA | 0.50 | 1 | -0.25 | 20 | -5.00 | | | Hakobyan, Sos | | | 1827 | USA | 0.50 | 1 | -0.27 | 20 | -5.40 | | | * 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) | | | | GM Igor Ivanov Weekender | Berkeley, California | USA | 2018-12-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1873 | 2036 | 2.00 | 4 | -0.81 | 20 | -16.20 | |
| | Anderson, Michael | | | 1726 | USA | 0.50 | 1 | -0.36 | 20 | -7.20 | | | Ai, Evan | | | 1799 | USA | 1.00 | 1 | 0.20 | 20 | 4.00 | | | Lu, Joshua | | | 1942 | USA | 0.50 | 1 | -0.13 | 20 | -2.60 | | | Wu, Derek Sijing | | | 2023 | USA | 0.00 | 1 | -0.52 | 20 | -10.40 | |
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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