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Individual Calculations July 2021 |
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| Johnson, Donald Total change: 25.60 | |   |
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| 30th Annual Chicago Open - Open | Wheeling, Illinois | USA | 2021-05-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2237 | 1990 | 2.50 | 8 | 0.91 | 40 | 36.40 | |
|  Posthuma, Joshua | f | | 2291 | USA | 0.00 | 1 | -0.15 | 40 | -6.00 | |  Chen, Ryo Wenyu | | | 2183 | USA | 0.00 | 1 | -0.25 | 40 | -10.00 | | | Iwu, Okechukwu Anele Nnej | | | 2152 | USA | 1.00 | 1 | 0.71 | 40 | 28.40 | | | Lehmann, Spencer George | f | | 2247 | USA | 0.50 | 1 | 0.32 | 40 | 12.80 | | | Graif, William | | | 2246 | CAN | 0.50 | 1 | 0.31 | 40 | 12.40 | | | Yang, Kevin | | | 2275 | USA | 0.00 | 1 | -0.16 | 40 | -6.40 | | | Cervantes, Thalia | f | wm | 2288 | USA | 0.50 | 1 | 0.35 | 40 | 14.00 | | | Canty, James | | | 2210 | USA | 0.00 | 1 | -0.22 | 40 | -8.80 | |
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) | | | | 2021 Carolinas Classic | Charlotte, North Carolina | USA | 2021-06-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1840 | 1966 | 3.00 | 5 | -0.27 | 40 | -10.80 | |
| | Eisenhauer, Stephen | | | 1665 | USA | 1.00 | 1 | 0.15 | 40 | 6.00 | | | Jacobson, Brandon | g | | 2366 * | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Kumar, Arya | | | 1876 | USA | 0.00 | 1 | -0.62 | 40 | -24.80 | | | Yu, Leo | | | 1566 * | USA | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Rajagopal, Adharsh | | | 1725 | USA | 1.00 | 1 | 0.20 | 40 | 8.00 | | | * 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) | | |
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