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Individual Calculations July 2021 |
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| Heredia, Carla Total change: -4.80 | |   |
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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 |
| 1882 | 2139 | 5.00 | 7 | -0.55 | 20 | -11.00 | |
|  Yang, Benjamin | | | 1739 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Ladan, Nicholas John | | | 1884 | USA | 0.00 | 1 | -0.81 | 20 | -16.20 | | | Das, Manmohan | | | 1743 | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Kaplan, Avi Harrison | | | 1739 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Mangalam, Shreya | | | 1991 | USA | 0.50 | 1 | -0.20 | 20 | -4.00 | | | Chen, Jonathan | | | 2037 | USA | 0.50 | 1 | -0.14 | 20 | -2.80 | | | Bronfeyn, Daniel | | | 2040 | USA | 1.00 | 1 | 0.36 | 20 | 7.20 | | | * 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) | | | | 2021 US Women's Open | Las Vegas, Nevada | USA | 2021-06-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1809 | 2112 | 3.50 | 4 | 0.10 | 20 | 2.00 | |
| | Gu, Crystal Jiuzhou | | | 1712 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Vidyarthi, Omya | | wc | 1817 | USA | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Arab, Kiana | | wc | 1835 | USA | 1.00 | 1 | 0.17 | 20 | 3.40 | | | Tang, Zoey | | | 1871 | USA | 0.50 | 1 | -0.30 | 20 | -6.00 | | | * 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) | | | | 2021 National Open - Under 2300 | Las Vegas, Nevada | USA | 2021-06-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1752 | 2112 | 2.00 | 2 | 0.21 | 20 | 4.20 | |
| | Yang, Benjamin | | | 1712 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Premkumar, Hiren | | | 1791 | USA | 1.00 | 1 | 0.13 | 20 | 2.60 | | | * 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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