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Individual Calculations January 2020 |
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| Zong, Davis Total change: 18.80 | |   |
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| 50th Annual National Chess Congress | Philadelphia, Pennsylvania | USA | 2019-11-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2217 | 2110 | 3.00 | 5 | 1.04 | 40 | 41.60 | |
|  De Dona, Mark | | | 1912 | USA | 1.00 | 1 | 0.24 | 40 | 9.60 | |  Petesch, Gabriel Nicholas | f | | 2272 | USA | 0.00 | 1 | -0.29 | 40 | -11.60 | | | Ling, Evan Maxwell | | | 1968 | USA | 1.00 | 1 | 0.31 | 40 | 12.40 | | | Schroeder, Jan-Christian | g | | 2510 * | GER | 0.50 | 1 | 0.42 | 40 | 16.80 | | | Tokhirjonova, Gulrukhbegim | | wg | 2421 | UZB | 0.50 | 1 | 0.36 | 40 | 14.40 | | | * 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) | | | | 38th Annual Empire City Open | New York, New York | USA | 2019-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1890 | 2110 | 4.00 | 6 | -0.57 | 40 | -22.80 | |
| | Rade, Dan | | | 1971 | USA | 0.00 | 1 | -0.69 | 40 | -27.60 | | | Prasanna, Gracy Franco | | | 1720 | USA | 1.00 | 1 | 0.09 | 40 | 3.60 | | | Masino, Matthew | | | 1948 | USA | 1.00 | 1 | 0.29 | 40 | 11.60 | | | Gu, Ethan | | | 1880 | USA | 0.00 | 1 | -0.79 | 40 | -31.60 | | | Wang, Ellen | | wf | 1784 | USA | 1.00 | 1 | 0.13 | 40 | 5.20 | | | Girsh, Daniel | | | 2034 | USA | 1.00 | 1 | 0.40 | 40 | 16.00 | |
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) | | |
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