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Individual Calculations February 2019 |
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| Zhao, Derek Total change: 24.80 | |   |
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| Westford January Open - U2000 | Westford, Massachusetts | USA | 2019-01-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1821 | 1773 | 1.50 | 2 | 0.62 | 40 | 24.80 | |
|  Astrachan, Edward | | | 1933 | USA | 0.50 | 1 | 0.21 | 40 | 8.40 | | | Hu, Pinyi | | | 1709 | USA | 1.00 | 1 | 0.41 | 40 | 16.40 | |
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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