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Individual Calculations August 2021 |
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| Deatrick, Alexander Total change: 13.60 | |   |
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| 49th Annual World Open - Under 2200 | Philadelphia, Pennsylvania | USA | 2021-07-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1891 | 1958 | 6.50 | 9 | 1.18 | 20 | 23.60 | |
|  Campbell, David | | | 1902 | USA | 0.50 | 1 | -0.08 | 20 | -1.60 | |  Guha, Rohit | | | 1864 | USA | 1.00 | 1 | 0.37 | 20 | 7.40 | | | Ye, Chen-Chen | | | 1893 | USA | 0.00 | 1 | -0.59 | 20 | -11.80 | | | Chan, Matthew M | | | 1906 | USA | 1.00 | 1 | 0.43 | 20 | 8.60 | | | Oommen, Binju | | | 1904 | IND | 1.00 | 1 | 0.42 | 20 | 8.40 | | | Kanli, Alperen | | | 1954 | AZE | 1.00 | 1 | 0.49 | 20 | 9.80 | | | Tang, Zoey | | | 1985 | USA | 0.00 | 1 | -0.46 | 20 | -9.20 | | | Chen, Derek | | | 1854 | USA | 1.00 | 1 | 0.36 | 20 | 7.20 | | | Prabhu, Naveen | | | 1757 | USA | 1.00 | 1 | 0.24 | 20 | 4.80 | |
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) | | | | 4th Annual Queen City of the Prairie Open and Fort Worth Championship | Fort Worth, Texas | USA | 2021-07-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1585 | 1958 | 3.50 | 4 | -0.10 | 20 | -2.00 | |
| | Brandao, Mark | | | 1558 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Raghuraja, Sri Avishkar | | | 1558 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Horvath, Andras | | | 1656 | USA | 0.50 | 1 | -0.35 | 20 | -7.00 | | | Nandhakumar, Vaseegaran | | | 1567 | USA | 1.00 | 1 | 0.09 | 20 | 1.80 | | | * 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) | | | | 22nd Annual Pittsburgh Open - Major | Pittsburgh, Pennsylvania | USA | 2021-07-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1709 | 1958 | 2.00 | 3 | -0.40 | 20 | -8.00 | |
| | Wang, Ryan R | | | 1722 | USA | 1.00 | 1 | 0.20 | 20 | 4.00 | | | Prestia, Frank | | | 1790 | USA | 0.00 | 1 | -0.72 | 20 | -14.40 | | | Ren, Jesse | | | 1614 | USA | 1.00 | 1 | 0.12 | 20 | 2.40 | |
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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