| 2007.9 | 2007.9 | 20 | 20 | Klaasen, CJ (Calvin) | FM | WCT | 2243.8 | 2255.8 | 2019 Western Province League (Premier) | 6 | 2019-08-10 | S | W | 0 | 0.27 | -0.27 | -5.4 | 0.25 | -0.25 | -5 |
| 1951 | 1951 | 20 | 20 | Klaasen, CJ (Calvin) | FM | WCT | 2231.2 | 2231.6 | 2018 Western Province League (Premier) | 2 | 2018-08-04 | S | W | 0 | 0.22 | -0.22 | -4.4 | 0.22 | -0.22 | -4.4 |
| 1916 | 1916 | 20 | 20 | Klaasen, Cj (Calvin) | FM | WP | 2113 | 2113 | South African Open 2015 (A) | 5 | 2015-07-05 | S | W | 0.5 | 0.25 | 0.25 | 5 | 0.25 | 0.25 | 5 |
| 1966 | 1966 | 20 | 20 | Klaasen, Cj (Calvin) | | WP | 2124 | 2124 | Western Province Open 2014 Prestige Section | 2 | 2014-03-08 | S | W | 0 | 0.29 | -0.29 | -5 | -0.29 | 0.29 | 5.8 |
| 1877 | 1877 | 20 | 20 | Klaasen, Cj (Calvin) | FM | WP | 2122 | 2122 | Commonwealth South African Open Chess Championsh | 2 | 2013-07-07 | S | W | 0.5 | 0.2 | 0.3 | 6 | 0.3 | 0.2 | 4 |
| 1877 | 1877 | 20 | 20 | Klaasen, Cj (Calvin) | FM | WP | 2122 | 2122 | Commonwealth South African Open Chess Championsh | 2 | 2013-07-07 | S | W | 0.5 | 0.2 | 0.3 | 6 | 0.3 | 0.2 | 4 |
| 1890 | 1890 | 20 | 20 | Klaasen, Cj (Calvin) | FM | WP | 2141 | 2141 | Manyanani Open 2013 (Open) | 4 | 2013-06-16 | S | W | 0 | 0.19 | -0.19 | -3.6 | -0.19 | 0.19 | 3.8 |
| 1844 | 1844 | 20 | 20 | Klaasen, Cj (Calvin) | NM | WP | 2142 | 2142 | Western Province Open 2013 Premier Section | 6 | 2013-03-16 | S | W | 0 | 0.15 | -0.15 | -3 | -0.15 | 0.15 | 3 |
| 1799 | 1799 | 20 | 20 | Klaasen, Cj (Calvin) | NM | WP | 2143 | 2143 | Cape Of Good Hope Open 2013 (Open Section) | 6 | 2013-01-27 | S | B | 0 | 0.12 | -0.12 | -2.3 | -0.12 | 0.12 | 2.4 |
| 1828 | 1828 | 20 | 20 | Klaasen, Cj (Calvin) | NM | WP | 2150 | 2150 | Mackie Memorial (A Section) | 3 | 2012-10-06 | S | B | 0 | 0.14 | -0.14 | -2.6 | -0.14 | 0.14 | 2.8 |
