| 1670.4 | 1679.7 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1946.7 | 1960.3 | 2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (A) | 2 | 2024-06-01 | S | W | 0 | 0.22 | -0.22 | -3.7 | 0.22 | -0.22 | -4.4 |
| 1714.7 | 1724.8 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1727.9 | 1732.8 | 2024 Centurion Club Closed Chess Tournament (A) | 4 | 2024-05-25 | S | B | 0 | 0.44 | -0.44 | -7.3 | 0.45 | -0.45 | -9 |
| 1632.6 | 1631.1 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1546.2 | 1541.1 | 2021 CCC Inhouse (A) | 4 | 2021-11-10 | S | W | 1 | 0.64 | 0.36 | 6 | 0.65 | 0.35 | 7 |
| 1632.8 | 1631.4 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1547.8 | 1542.7 | 2020 CC Annual Opener | 3 | 2020-02-12 | S | B | 0 | 0.56 | -0.56 | -9.3 | 0.56 | -0.56 | -11.2 |
| 1661.4 | 1731.8 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1493.2 | 1559.4 | 2019 Mid-Gauteng Open (A) | 3 | 2019-08-17 | S | B | 1 | 0.65 | 0.35 | 5.8 | 0.66 | 0.34 | 6.8 |
| 1688 | 1718.9 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1413.1 | 1384.8 | 2019 Centurion Club Tournament Open | 6 | 2019-01-30 | S | W | 1 | 0.86 | 0.14 | 2.3 | 0.93 | 0.07 | 1.4 |
