| Jun 29, 2026 | Mnyasta | ½–½ | Klaasen | SA Open 2026 Championship | Queen's Gambit Declined | |
| Jun 29, 2026 | Klaasen | ½–½ | Rogov | SA Open 2026 Championship | Sicilian Defense: Four Knights Variation | |
| Jun 29, 2026 | Klaasen | 1–0 | Davies | SA Open 2026 Championship | Grünfeld Defense: Three Knights Variation | |
| Jun 29, 2026 | Ncethelo | 0–1 | Klaasen | SA Open 2026 Championship | Queen's Gambit Declined | |
| Mar 1, 2026 | Mnyasta | ½–½ | Klaasen | SA Adult Closed | Sicilian Defense: Kalashnikov Variation | |
| Feb 28, 2026 | Cawdery | ½–½ | Klaasen | SA Adult Closed | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Feb 25, 2026 | Dinham | 1–0 | Klaasen | SA Adult Closed | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Feb 23, 2026 | Cawdery | ½–½ | Klaasen | SA Adult Closed | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Feb 22, 2026 | Klaasen | ½–½ | Karsten | SA Adult Closed | Benko Gambit Accepted: Fully Accepted Variation | |
| Feb 22, 2026 | Klaasen | ½–½ | Simpson | SA Adult Closed | Queen's Gambit Declined: Three Knights Variation | |
| Feb 21, 2026 | Levitan | * | Klaasen | SA Adult Closed | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Feb 21, 2026 | Klaasen | 0–1 | Van Zyl-Rudd | SA Adult Closed | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Feb 19, 2026 | Klaasen | 0–1 | Levitan | SA Adult Closed | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Feb 19, 2026 | Mhango | ½–½ | Klaasen | SA Adult Closed | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Feb 19, 2026 | Klaasen | 1–0 | Barrish | SA Adult Closed | Nimzo-Indian Defense: Classical Variation | |
| Feb 19, 2026 | Klaasen | 1–0 | Mazibuko | SA Adult Closed | Nimzo-Indian Defense: Classical Variation | |
| Feb 19, 2026 | Levitan | 1–0 | Klaasen | SA Adult Closed | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jan 9, 2025 | Mnyasta | 1–0 | Klaasen | Round 6: Mnyasta, Tezihano - Klaasen, Calvin John | ? | |
| Jan 8, 2025 | Klaasen | ½–½ | Kobese | Round 5: Klaasen, Calvin John - Kobese, Watu | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Jan 8, 2025 | Samuels | 0–1 | Klaasen | Round 4: Samuels, Ethan - Klaasen, Calvin John | Bishop's Opening: Vienna Hybrid | |
| Jan 7, 2025 | Klaasen | ½–½ | Schutte | Round 3: Klaasen, Calvin John - Schutte, Andre | Slav Defense: Modern Line | |
| Jan 6, 2025 | Klaasen | 1–0 | Milford | Round 2: Klaasen, Calvin John - Milford, Eugene | English Opening: King's English Variation, Reversed Closed Sicilian | |
| Jan 6, 2025 | Mncwabe | 0–1 | Klaasen | Round 1: Mncwabe, Minenhle Junior - Klaasen, Calvin John | English Opening: Symmetrical Variation | |
| Apr 2, 2024 | Karsten | 1–0 | Klaasen | Round 11: Karsten, Jan - Klaasen, Calvin John | Ruy Lopez: Closed, Flohr System | |
| Apr 1, 2024 | Klaasen | ½–½ | Mnguni | Round 10: Klaasen, Calvin John - Mnguni, Jacob Dumisani | Petrov's Defense: Modern Attack, Center Variation | |
| Mar 31, 2024 | Barrish | ½–½ | Klaasen | Round 9: Barrish, Daniel - Klaasen, Calvin John | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Mar 31, 2024 | Klaasen | ½–½ | Levitan | Round 8: Klaasen, Calvin John - Levitan, Caleb Levi | Scotch Game: Classical Variation, Intermezzo Variation | |
| Mar 30, 2024 | Kobese | ½–½ | Klaasen | Round 7: Kobese, Watu - Klaasen, Calvin John | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| Mar 29, 2024 | Klaasen | ½–½ | Cawdery | Round 6: Klaasen, Calvin John - Cawdery, Daniel | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Mar 29, 2024 | Mfazwe | 0–1 | Klaasen | Round 5: Mfazwe, Lutho - Klaasen, Calvin John | Queen's Gambit Declined: Tartakower Defense | |
| Mar 28, 2024 | Klaasen | ½–½ | Mhango | Round 4: Klaasen, Calvin John - Mhango, Banele | King's Indian Defense: Semi-Averbakh System | |
| Mar 27, 2024 | Khumalo | ½–½ | Klaasen | Round 3: Khumalo, Keith - Klaasen, Calvin John | Rapport-Jobava System | |
| Mar 26, 2024 | Klaasen | 0–1 | Mnyasta | Round 2: Klaasen, Calvin John - Mnyasta, Charlton | Sicilian Defense: Sozin Attack, Leonhardt Variation | |
| Mar 25, 2024 | Klaasen | 1–0 | Simpson | Round 1: Klaasen, Calvin John - Simpson, Michael | Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line | |
