| 1673.9 | 1674.6 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1963.2 | 1971.2 | 2025 Menlo Open (A) | 1 | 2025-07-26 | S | W | 0 | 0.21 | -0.21 | -3.5 | 0.2 | -0.2 | -4 |
| 1658.5 | 1656.2 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1948.8 | 1954.8 | 2025 Elise Steenkamp Open Chess Tournament (King) | 2 | 2025-06-14 | S | W | 0 | 0.2 | -0.2 | -3.8 | 0.19 | -0.19 | -3.8 |
| 1638.4 | 1624.8 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1680.3 | 1689.7 | 2023 Elize Steenkamp Open Tournament (A) | 1 | 2023-06-16 | S | W | 0.5 | 0.49 | 0.01 | 0.2 | 0.47 | 0.03 | 0.6 |
| 1676.7 | 1669.1 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1689 | 1708.4 | 2023 Tshwane Chess Open Registration Tournament (A) | 4 | 2023-01-28 | S | B | 0 | 0.44 | -0.44 | -7.3 | 0.41 | -0.41 | -8.2 |
| 1610.7 | 1604.2 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1661.9 | 1659.9 | 2022 Etienne Lewis (U14 Open) | 4 | 2022-09-03 | S | B | 0 | 0.4 | -0.4 | -7.5 | 0.39 | -0.39 | -7.8 |
| 1493.5 | 1486.9 | 20 | 20 | Jacobs, CN (Calvin Nicholas) | | GTP | 1664.7 | 1666.7 | 2019 TC SAJCC Prep Tournament (A) | 1 | 2019-11-30 | S | B | 0 | 0.26 | -0.26 | -4.3 | 0.25 | -0.25 | -5 |
