| 2052.9 | 2033.4 | 20 | 20 | Klaasen, CJ (Calvin) | FM | WCT | 2194.4 | 2207.1 | WP Open 2021 (Championship) | 6 | 2021-05-09 | S | B | 0.5 | 0.29 | 0.21 | 3.7 | 0.26 | 0.24 | 4.8 |
| 2086.1 | 2159.1 | 20 | 20 | Klaasen, CJ (Calvin) | FM | WCT | 2256.6 | 2247.4 | DSK Chess Tournament 2019 (Open) | 6 | 2019-06-08 | R | B | 0 | 0.26 | -0.26 | -2.4 | 0.36 | -0.36 | -7.2 |
| 2066 | 2125.5 | 20 | 20 | Klaasen, CJ (Calvin) | FM | WCT | 2253 | 2245.8 | Stellenberg Youth Chess Championship 2019 (Presige) | 6 | 2019-05-01 | R | W | 0.5 | 0.32 | 0.18 | 2.2 | 0.4 | 0.1 | 2 |
| 2052.3 | 2088.7 | 20 | 20 | Klaasen, CJ (Calvin) | FM | WCT | 2260.8 | 2260.8 | Graham Solomon Memorial 2018 (Rapid) | 4 | 2018-11-24 | R | B | 1 | 0.22 | 0.78 | 9.4 | 0.26 | 0.74 | 14.8 |
| 2052.3 | 2046.3 | 20 | 20 | Klaasen, CJ (Calvin) | FM | WCT | 2260.8 | 2241.3 | Graham Solomon Memorial 2018 (Blitz) | 2 | 2018-11-25 | B | W | 0 | 0.3 | -0.3 | -1.5 | 0.31 | -0.31 | -6.2 |
| 2037 | 2037 | 20 | 20 | Klaasen, Cj (Calvin) | FM | WP | 2116 | 2116 | Steinitz Chess Festival 2015 (Elite) | 1 | 2015-09-24 | S | W | 0 | 0.39 | -0.39 | -7.8 | -0.39 | 0.39 | 7.8 |
| 1999 | 1999 | 20 | 20 | Klaasen, Cj (Calvin) | FM | WP | 2124 | 2124 | Manyanani Chess Festival 2015 (Elite Section) | 3 | 2015-06-14 | S | W | 1 | 0.33 | 0.67 | 13.4 | 0.67 | 0.33 | 6.6 |
| 2062 | 2062 | 20 | 20 | Klaasen, Cj (Calvin) | FM | WP | 2065 | 2065 | Wp Rapid Chess Championships (Open) | 7 | 2015-05-23 | R | B | 0.5 | 0 | 0.5 | 3.3 | 0.5 | 0 | 0 |
| 2029 | 2029 | 20 | 20 | Klaasen, Cj (Calvin) | FM | WP | 2138 | 2138 | Western Province League 2014 (Premier Division) | 8 | 2015-02-17 | S | B | 0 | 0.35 | -0.35 | -7 | -0.35 | 0.35 | 7 |
| 2031 | 2031 | 20 | 20 | Klaasen, Cj (Calvin) | | WP | 2124 | 2124 | Ample Sport Club Team Championship 2014 | 7 | 2014-03-23 | S | B | 0 | 0.37 | -0.37 | -7 | -0.37 | 0.37 | 7.4 |
| 2029 | 2029 | 20 | 20 | Klaasen, Cj (Calvin) | FM | WP | 2122 | 2122 | Dsk2013 Prestige Section | 4 | 2013-07-20 | S | B | 0.5 | 0.37 | 0.13 | 2.6 | 0.13 | 0.37 | 7.4 |
