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Individual Calculations July 2021 |
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| Redfield, Grant Total change: 7.40 | |   |
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| 76th Annual Texas State and Amateur Championship | Fort Worth, Texas | USA | 2021-05-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1924 | 1923 | 1.50 | 3 | 0.00 | 20 | 0.00 | |
|  Obili, Abhishek | | | 2067 | USA | 0.00 | 1 | -0.31 | 20 | -6.20 | |  Premkumar, Hiren | | | 1791 | USA | 1.00 | 1 | 0.32 | 20 | 6.40 | | | Kunka, Harshid | | | 1913 | USA | 0.50 | 1 | -0.01 | 20 | -0.20 | |
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) | | | | 14th Annual Cleveland Open - Major | Middleburg Heights, Ohio | USA | 2021-06-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1981 | 1923 | 2.00 | 3 | 0.67 | 20 | 13.40 | |
| | Marshall, Calvin | | | 1840 | USA | 1.00 | 1 | 0.39 | 20 | 7.80 | | | Bonin, Jay Richard | m | | 2236 | USA | 0.00 | 1 | -0.14 | 20 | -2.80 | | | Cardwell, Guy | | | 1867 | USA | 1.00 | 1 | 0.42 | 20 | 8.40 | |
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) | | | | 2021 National Open - Under 2300 | Las Vegas, Nevada | USA | 2021-06-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2073 | 1923 | 0.00 | 1 | -0.30 | 20 | -6.00 | |
| | Levine, Joseph | | | 2073 | USA | 0.00 | 1 | -0.30 | 20 | -6.00 | |
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) | | |
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