| 1879.5 | 1886.8 | 20 | 20 | Willenberg, KS (Kenneth) | CM | WCT | 1873 | 1863.7 | WP Club League 2023 (A) | 3 | 2023-08-05 | S | W | 1 | 0.55 | 0.45 | 9 | 0.57 | 0.43 | 8.6 |
| 2000.2 | 2025.2 | 20 | 20 | Willenberg, KS (Kenneth) | CM | WCT | 1979.3 | 1975.5 | WP Closed 2022 (A) | 5 | 2022-06-16 | S | B | 0.5 | 0.48 | 0.02 | 0.4 | 0.52 | -0.02 | -0.4 |
| 2003.1 | 2019.3 | 20 | 20 | Willenberg, KS (Kenneth) | CM | WCT | 1974.1 | 1963.7 | Steinitz Open 2022 (A) | 4 | 2022-05-21 | S | W | 0 | 0.58 | -0.58 | -10.9 | 0.61 | -0.61 | -12.2 |
| 2003.1 | 2019.3 | 20 | 20 | Willenberg, KS (Kenneth) | CM | WCT | 1974.1 | 1963.7 | 2022 South African Closed Chess Championships (Open) | 2 | 2022-05-08 | S | W | 1 | 0.58 | 0.42 | 8.4 | 0.61 | 0.39 | 7.8 |
| 2013.2 | 2029.7 | 20 | 20 | Willenberg, KS (Kenneth) | CM | WCT | 1979.8 | 1964.5 | Moja Open 2022 (Prestige) | 2 | 2022-03-19 | S | W | 1 | 0.58 | 0.42 | 8.4 | 0.62 | 0.38 | 7.6 |
| 2023.3 | 2045.4 | 20 | 20 | Willenberg, KS (Kenneth) | CM | WCT | 1997.1 | 1978.1 | Kraaifontein Open 2022 (Championship) | 3 | 2022-01-08 | S | B | 1 | 0.49 | 0.51 | 9.6 | 0.54 | 0.46 | 9.2 |
| 2027.1 | 2072.8 | 20 | 20 | Willenberg, KS (Kenneth) | CM | WCT | 1992.5 | 1981.3 | 2019 South African Closed Chess Championships (Open B) | 8 | 2019-12-14 | S | B | 1 | 0.5 | 0.5 | 10 | 0.56 | 0.44 | 8.8 |
| 2023.3 | 2071 | 20 | 20 | Willenberg, KS (Kenneth) | CM | WCT | 1988.8 | 1975.5 | 2019 Western Cape Club Championship (A+B) | 3 | 2019-10-26 | S | B | 0.5 | 0.5 | 0 | 0 | 0.57 | -0.07 | -1.4 |
| 2152.5 | 2154.4 | 20 | 20 | Willenberg, KS (Kenneth) | CM | WCT | 1980.3 | 1972.5 | 2018 Western Province League (Premier) | 7 | 2018-09-01 | S | W | 0 | 0.74 | -0.74 | -14.8 | 0.75 | -0.75 | -15 |
| 1997 | 1997 | 20 | 20 | Willenberg, Ks (Kenneth) | | WP | 1937 | 1937 | 2017 Western Province League (Premier) | 5 | 2017-08-12 | S | B | 0 | 0.58 | -0.58 | -11.6 | -0.58 | 0.58 | 11.6 |
| 2031 | 2031 | 20 | 20 | Willenberg, Ks (Kenneth) | | WP | 1967 | 1967 | Wp Open 2017 (Elite) | 6 | 2017-03-05 | S | W | 1 | 0.59 | 0.41 | 7.7 | 0.41 | 0.59 | 11.8 |
| 2086 | 2086 | 20 | 20 | Willenberg, Ks (Kenneth) | | WP | 1970 | 1970 | Wp Open 2016 (A) | 3 | 2016-02-27 | S | B | 1 | 0.66 | 0.34 | 5.9 | 0.34 | 0.66 | 13.2 |
| 2086 | 2086 | 20 | 20 | Willenberg, Ks (Kenneth) | | WP | 1970 | 1970 | Wp Open 2016 (A) | 3 | 2016-02-27 | S | B | 1 | 0.66 | 0.34 | 5.9 | 0.34 | 0.66 | 13.2 |
| 2107 | 2107 | 20 | 20 | Willenberg, Ks (Kenneth) | | WP | 1974 | 1974 | Western Province Closed 2014 (A) | 7 | 2014-08-09 | S | B | 1 | 0.68 | 0.32 | 6 | 0.32 | 0.68 | 13.6 |
| 2135 | 2135 | 20 | 20 | Willenberg, Ks (Kenneth) | | WP | 1986 | 1986 | Steinitz Open 2014 (Prestige A) | 7 | 2014-05-15 | S | W | 0 | 0.7 | -0.7 | -14 | -0.7 | 0.7 | 14 |
| 2120 | 2120 | 20 | 20 | Willenberg, Ks (Kenneth) | | WP | 2017 | 2017 | Western Province Closed 2013 (A-Section) | 1 | 2013-08-22 | S | B | 1 | 0.64 | 0.36 | 6.8 | 0.36 | 0.64 | 12.8 |
