| Jan 7, 2024 | Kenneth Willenberg | 0–1 | Jan Karsten | Round 9: Kenneth Willenberg - Jan Karsten | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Jan 6, 2024 | Craig Willenberg | 0–1 | Jan Karsten | Round 8: Craig Willenberg - Jan Karsten | King's Indian Attack: Spassky Variation | |
| Jan 6, 2024 | Watu Kobese | 0–1 | Jan Karsten | Round 7: Watu Kobese - Jan Karsten | King's Gambit Accepted: Abbazia Defense | |
| Jan 5, 2024 | Jan Karsten | ½–½ | Khanya Mazibuko | Round 6: Jan Karsten - Khanya Mazibuko | Ruy Lopez: Closed, Breyer Defense, Zaitsev Hybrid | |
| Jan 5, 2024 | Jan Karsten | 1–0 | Matfey Rogov | Round 5: Jan Karsten - Matfey Rogov | English Opening: King's English Variation | |
| Jan 4, 2024 | Charlton Mnyasta | ½–½ | Jan Karsten | Round 4: Charlton Mnyasta - Jan Karsten | Ruy Lopez: Morphy Defense | |
| Jan 3, 2024 | Jan Karsten | * | Michael Cuthbert | Round 1: Jan Karsten - Michael Cuthbert | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Oct 4, 2023 | Jan Karsten | * | Banele Mhango | Round 9: Jan Karsten - Banele Mhango | Sicilian Defense: Four Knights Variation | |
| Oct 3, 2023 | Jan Karsten | 1–0 | Gillan Bwalya | Round 8: Jan Karsten - Gillan Bwalya | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Oct 3, 2023 | Heskiel Ndahangwapo | 0–1 | Jan Karsten | Round 7: Heskiel Ndahangwapo - Jan Karsten | King's Indian Defense: Averbakh Variation, Benoni Defense, Advance Variation | |
| Oct 2, 2023 | Jan Karsten | * | Johannes Mabusela | Round 6: Jan Karsten - Johannes Mabusela | Ruy Lopez: Closed, Flohr System | |
| Oct 2, 2023 | Adham Fawzy | 1–0 | Jan Karsten | Round 5: Adham Fawzy - Jan Karsten | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Exchange Line | |
| Oct 1, 2023 | Alton Banda | 0–1 | Jan Karsten | Round 4: Alton Banda - Jan Karsten | Sicilian Defense: Najdorf Variation | |
| Oct 1, 2023 | Jan Karsten | 1–0 | Michael Simpson | Round 3: Jan Karsten - Michael Simpson | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Sep 30, 2023 | Kenneth Willenberg | 0–1 | Jan Karsten | Round 2: Kenneth Willenberg - Jan Karsten | Sicilian Defense: Moscow Variation | |
| Sep 30, 2023 | Jan Karsten | 1–0 | Blessing Moyo | Round 1: Jan Karsten - Blessing Moyo | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jun 24, 2023 | Prraneeth Vuppala | * | Jan Karsten | Round 1: Prraneeth Vuppala - Jan Karsten | ? | |
| 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 | Jan Boder | ½–½ | Jan Karsten | Round 4: Jan Boder - Jan Karsten | Nimzo-Larsen Attack: Spike Variation | |
| Jun 10, 2023 | Jan Karsten | 0–1 | Yovann Gatineau | Round 3: Jan Karsten - Yovann Gatineau | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jun 10, 2023 | Matfey Rogov | * | Jan Karsten | Round 2: Matfey Rogov - Jan Karsten | Sicilian Defense: Najdorf Variation | |
| Jun 9, 2023 | Jan Karsten | 1–0 | Daniel Barrish | Round 1: Jan Karsten - Daniel Barrish | Sicilian Defense: Taimanov Variation, Normal Variation | |
| Sep 12, 2022 | Imangali Akhilbay | 1–0 | Jan Karsten | Round 7: Imangali Akhilbay - Jan Karsten | Sicilian Defense: Modern Variations | |
| Sep 11, 2022 | Jan Karsten | 0–1 | Artem Berin | Round 6: Jan Karsten - Artem Berin | French Defense: Tarrasch Variation | |
| Sep 10, 2022 | Battulga Tenuunbold | 1–0 | Jan Karsten | Round 5: Battulga Tenuunbold - Jan Karsten | Slav Defense: Modern Line | |
| Sep 9, 2022 | Jan Karsten | ½–½ | Jakub Seemann | Round 4: Jan Karsten - Jakub Seemann | Caro-Kann Defense: Advance Variation | |
| Sep 8, 2022 | Vsevolod Ponomarev | 0–1 | Jan Karsten | Round 3: Vsevolod Ponomarev - Jan Karsten | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Sep 7, 2022 | Jan Karsten | 1–0 | Flawian Krawczyk | Round 2: Jan Karsten - Flawian Krawczyk | Sicilian Defense: Moscow Variation | |
