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Individual Calculations July 2023 |
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| Christiansen, Natasha Total change: -17.60 | |   |
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| 91st Massachusetts Open | Westford, MA | USA | 2023-05-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1802 | 1575 | 0.50 | 3 | -0.19 | 20 | -3.80 | |
|  Laido, Olivia | | | 1656 | USA | 0.00 | 1 | -0.39 | 20 | -7.80 | |  Katsman, David | | | 1814 | USA | 0.00 | 1 | -0.20 | 20 | -4.00 | | | Smirnov, William | | | 1935 | USA | 0.50 | 1 | 0.40 | 20 | 8.00 | |
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) | | | | 2023 National Open - Under 2100 | Las Vegas, NV | USA | 2023-06-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1425 | 1568 | 2.00 | 4 | -0.69 | 20 | -13.80 | |
| | Briggs, James W | | | 1191 | USA | 0.00 | 1 | -0.91 | 20 | -18.20 | | | Pham, Linda | | | 1255 | USA | 0.50 | 1 | -0.36 | 20 | -7.20 | | | Ramaswamy, Pudur | | | 1298 | USA | 1.00 | 1 | 0.17 | 20 | 3.40 | | | Shemesh, Yuval | | | 1957 | USA | 0.50 | 1 | 0.41 | 20 | 8.20 | |
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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