| Jan 7, 2024 | Watu Kobese | ½–½ | Calvin John Klaasen | Round 9: Watu Kobese - Calvin John Klaasen | Caro-Kann Defense: Advance Variation, Van der Wiel Attack | |
| Jan 6, 2024 | Calvin John Klaasen | 1–0 | Charlton Mnyasta | Round 8: Calvin John Klaasen - Charlton Mnyasta | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 6, 2024 | Matfey Rogov | ½–½ | Calvin John Klaasen | Round 7: Matfey Rogov - Calvin John Klaasen | Queen's Gambit Declined: Janowski Variation | |
| Jan 5, 2024 | Calvin John Klaasen | ½–½ | Edward Potgieter | Round 6: Calvin John Klaasen - Edward Potgieter | Bogo-Indian Defense: Nimzowitsch Variation | |
| Jan 5, 2024 | Reegan Palmer | 0–1 | Calvin John Klaasen | Round 5: Reegan Palmer - Calvin John Klaasen | Sicilian Defense: French Variation | |
| Jan 4, 2024 | Calvin John Klaasen | ½–½ | Tezihano Mnyasta | Round 4: Calvin John Klaasen - Tezihano Mnyasta | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 3, 2024 | Minenhle Junior Mncwabe | * | Calvin John Klaasen | Round 1: Minenhle Junior Mncwabe - Calvin John Klaasen | Caro-Kann Defense: Panov Attack, Modern Defense, Mieses Line | |
| Jun 11, 2023 | Jan Karsten | ½–½ | Calvin John Klaasen | Round 5: Jan Karsten - Calvin John Klaasen | Ruy Lopez: Closed, Zaitsev System | |
| Jun 11, 2023 | Calvin John Klaasen | 1–0 | Matfey Rogov | Round 4: Calvin John Klaasen - Matfey Rogov | French Defense: Winawer Variation, Bogoljubow Variation | |
| Jun 10, 2023 | Jan Boder | ½–½ | Calvin John Klaasen | Round 3: Jan Boder - Calvin John Klaasen | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jun 10, 2023 | Calvin John Klaasen | * | Daniel Barrish | Round 2: Calvin John Klaasen - Daniel Barrish | Queen's Pawn Game: Symmetrical Variation | |
| Jun 9, 2023 | Yovann Gatineau | 1–0 | Calvin John Klaasen | Round 1: Yovann Gatineau - Calvin John Klaasen | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| May 13, 2022 | Kenneth Sean Willenberg | 0–1 | Calvin John Klaasen | Round 8: Kenneth Sean Willenberg - Calvin John Klaasen | Sicilian Defense: Open | |
| May 12, 2022 | Calvin John Klaasen | 1–0 | Khanya Mazibuko | Round 7: Calvin John Klaasen - Khanya Mazibuko | Ruy Lopez: Closed, Breyer Defense, Quiet Variation | |
| May 11, 2022 | Daniel Barrish | * | Calvin John Klaasen | Round 6: Daniel Barrish - Calvin John Klaasen | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 10, 2022 | Calvin John Klaasen | 0–1 | Watu Kobese | Round 5: Calvin John Klaasen - Watu Kobese | King's Indian Defense: Makogonov Variation | |
| May 9, 2022 | Daniel Cawdery | 1–0 | Calvin John Klaasen | Round 4: Daniel Cawdery - Calvin John Klaasen | Italian Game: Evans Gambit, Anderssen Variation, Cordel Line | |
| May 8, 2022 | Calvin John Klaasen | ½–½ | Shabir Hussain Bhawoodien | Round 3: Calvin John Klaasen - Shabir Hussain Bhawoodien | English Opening: Anglo-Indian Defense, Hedgehog System | |
| May 8, 2022 | Banele Mhango | 1–0 | Calvin John Klaasen | Round 2: Banele Mhango - Calvin John Klaasen | Queen's Indian Defense: Classical Variation, Traditional Variation | |
| May 7, 2022 | Calvin John Klaasen | ½–½ | Kenny Solomon | Round 1: Calvin John Klaasen - Kenny Solomon | Ruy Lopez: Closed | |
