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Individual Calculations April 2019 |
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| Senekal, Frederick Petrus Total change: -16.40 | |   |
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| 2019 Waterkloof Open (B) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1069 | 1156 | 0.50 | 1 | -0.12 | 40 | -4.80 | |
|  Naidoo, Mira | | | 1069 | RSA | 0.50 | 1 | -0.12 | 40 | -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) | | | | South African Junior Closed Chess Championships 2019 (u12 Open) | Benoni | RSA | 2019-03-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1182 | 1156 | 2.50 | 6 | -0.29 | 40 | -11.60 | |
|  Van Schaik, Migael | | | 1253 | RSA | 0.50 | 1 | 0.13 | 40 | 5.20 | | | Arjun, Sopanam Prabha | | | 1004 | RSA | 1.00 | 1 | 0.30 | 40 | 12.00 | | | Bester, Ethan | | | 1272 | RSA | 1.00 | 1 | 0.66 | 40 | 26.40 | | | Simpson, Michael | | | 1269 | RSA | 0.00 | 1 | -0.35 | 40 | -14.00 | | | Potgieter, Edward | | | 1165 | RSA | 0.00 | 1 | -0.49 | 40 | -19.60 | | | Palmer, Reegan | | | 1128 | RSA | 0.00 | 1 | -0.54 | 40 | -21.60 | |
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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