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Individual Calculations July 2021 |
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| Chen, Jonathan Total change: 66.40 | |   |
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| 30th Annual Chicago Open - Under 2300 | Wheeling, Illinois | USA | 2021-05-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1949 | 2037 | 4.00 | 6 | 0.47 | 40 | 18.80 | |
|  Rajanish, Adhvaith | | | 1850 | USA | 1.00 | 1 | 0.26 | 40 | 10.40 | |  Studen, Damir | | | 2118 | USA | 0.50 | 1 | 0.11 | 40 | 4.40 | | | Aaron, Michael E | | | 1699 | USA | 1.00 | 1 | 0.12 | 40 | 4.80 | | | Tsyganov, Igor | f | | 2221 | USA | 0.50 | 1 | 0.24 | 40 | 9.60 | | | Heredia, Carla | | wg | 2139 | ECU | 0.50 | 1 | 0.14 | 40 | 5.60 | | | Rambha, Hemachandra | | | 1668 | USA | 0.50 | 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) | | | | 2021 National Open - Championship | Las Vegas, Nevada | USA | 2021-06-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2216 | 2037 | 3.50 | 8 | 1.19 | 40 | 47.60 | |
| | Norowitz, Yaacov | m | | 2420 | USA | 0.00 | 1 | -0.09 | 40 | -3.60 | | | Boekhoff, Andrew | f | | 2278 | USA | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Grabinsky, Aaron | m | | 2437 * | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Finkelstein, Alan | | | 1760 | USA | 1.00 | 1 | 0.17 | 40 | 6.80 | | | Wu, Derek | | | 2135 | USA | 1.00 | 1 | 0.63 | 40 | 25.20 | | | Chasin, Nico Werner | f | | 2276 | USA | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Atanasov, Anthony | f | | 2172 | CAN | 1.00 | 1 | 0.68 | 40 | 27.20 | | | Matta, Nicholas F | | | 2253 | USA | 0.50 | 1 | 0.28 | 40 | 11.20 | | | * 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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