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Individual Calculations February 2018 |
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| Vigorito, David Total change: 1.40 | |   |
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| 2018 Portsmouth Open | Portsmouth, New Hampshire | USA | 2018-01-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1988 | 2353 | 3.00 | 3 | 0.31 | 10 | 3.10 | |
|  Kind, Michael | | | 2059 | USA | 1.00 | 1 | 0.15 | 10 | 1.50 | |  Elmore, John P | | | 1953 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Ramanathan, Suraj | | | 1953 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | * 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) | | | | WN 2018 Winter 2-day Open | West Newbury, Massachusetts | USA | 2018-01-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1956 | 2353 | 3.50 | 4 | -0.17 | 10 | -1.70 | |
| | Prestia, Frank | | | 1953 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Prestia, Paris | | | 1953 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Chen, Maxwell | | | 1953 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Li, Jerry | c | | 1963 | USA | 0.50 | 1 | -0.41 | 10 | -4.10 | | | * 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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