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Individual Calculations January 2018 |
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| Gaffagan, Steven Total change: 13.80 | |   |
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| 2017 Berkeley Club Championship | Berkeley, California | USA | 2017-10-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1937 | 2023 | 5.00 | 8 | 0.33 | 20 | 6.60 | |
|  Soltani, Mohammad | | | 1623 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Jirasek, Ladia | f | | 2190 | USA | 0.00 | 1 | -0.28 | 20 | -5.60 | | | Lesquillier, Walter | | | 1661 | USA | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Ivanov, Aleksandr | | | 2105 | USA | 1.00 | 1 | 0.61 | 20 | 12.20 | | | O`connor, Derek | | | 2235 | USA | 0.50 | 1 | 0.27 | 20 | 5.40 | | | Jensen, Christian | | | 1786 | USA | 0.50 | 1 | -0.30 | 20 | -6.00 | | | Poehlmann, Roger | | | 2183 | USA | 0.00 | 1 | -0.29 | 20 | -5.80 | | | Acosta, Anthony | | | 1710 | USA | 1.00 | 1 | 0.14 | 20 | 2.80 | | | * 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) | | | | Fall 2017 Tuesday Night Marathon | San Francisco, California | USA | 2017-10-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1853 | 2023 | 4.50 | 6 | 0.36 | 20 | 7.20 | |
| | Simpkins, Jerry | | | 1623 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Abraham, Michael | | | 1623 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Sarafian, Greg | | | 1848 | USA | 0.50 | 1 | -0.23 | 20 | -4.60 | | | Marcus, Joel | | | 1840 | USA | 1.00 | 1 | 0.26 | 20 | 5.20 | | | Maser, Thomas | | | 1951 | USA | 1.00 | 1 | 0.40 | 20 | 8.00 | | | Oconnor, Derek | | | 2235 | USA | 0.00 | 1 | -0.23 | 20 | -4.60 | | | * 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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