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Individual Calculations September 2019 |
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| Samuelson, Andrew Total change: -3.60 | |   |
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| 2019 Potomac Open | Rockville, Maryland | USA | 2019-08-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1969 | 2098 | 2.50 | 5 | -0.80 | 20 | -16.00 | |
|  Kurtz, Eric | | | 2013 | USA | 0.00 | 1 | -0.62 | 20 | -12.40 | |  Bonam, Saigautam | | | 1773 | USA | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Altman, Joshua | c | | 1916 | ENG | 0.50 | 1 | -0.24 | 20 | -4.80 | | | Luo, Ryan | | | 2090 | USA | 0.00 | 1 | -0.51 | 20 | -10.20 | | | Senft, Sean | | | 2055 | USA | 1.00 | 1 | 0.44 | 20 | 8.80 | |
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) | | | | 51st Annual Atlantic Open | Falls Church, Virginia | USA | 2019-08-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2141 | 2098 | 2.50 | 4 | 0.62 | 20 | 12.40 | |
| | Tahmassebi, Bijan | | | 2102 | USA | 1.00 | 1 | 0.51 | 20 | 10.20 | | | Paragua, Mark | g | | 2498 * | PHI | 0.50 | 1 | 0.42 | 20 | 8.40 | | | Altman, Joshua | c | | 1916 | ENG | 0.00 | 1 | -0.74 | 20 | -14.80 | | | Prestia, Paris | | | 2049 | USA | 1.00 | 1 | 0.43 | 20 | 8.60 | | | * 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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