28 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Markus, John Raymond | Verschoor, Scott | 0-1 | D02 | Round 2: Markus, John Raymond - Verschoor, Scott | 2026-07-22 |
| Markus, John Raymond | Trunz, Tamila | 1-0 | E70 | Round 9: Markus, John Raymond - Trunz, Tamila | 2025-07-30 |
| Markus, John Raymond | Van Egmond, Rogier | 0-1 | A46 | Round 7: Markus, John Raymond - Van Egmond, Rogier | 2025-07-28 |
| Markus, John Raymond | Kossen, Johannes | 1-0 | A47 | Round 4: Markus, John Raymond - Kossen, Johannes | 2025-07-25 |
| John Raymond Markus | Alexander Boesel | 1/2-1/2 | D04 | Round 8: John Raymond Markus - Alexander Boesel | 2023-08-02 |
| John Raymond Markus | Thomas Kools | 1-0 | D05 | Round 7: John Raymond Markus - Thomas Kools | 2023-08-01 |
| John Raymond Markus | William Shakhverdian | 0-1 | D00 | Round 5: John Raymond Markus - William Shakhverdian | 2023-07-29 |
| John Raymond Markus | Jakob Weidemann | 0-1 | A46 | Round 2: John Raymond Markus - Jakob Weidemann | 2023-07-26 |
| John Raymond Markus | Jaap Vogel | 1/2-1/2 | D02 | Round 9: John Raymond Markus - Jaap Vogel | 2022-10-22 |
| John Raymond Markus | Wim Heemskerk | 1-0 | E12 | Round 7: John Raymond Markus - Wim Heemskerk | 2022-10-20 |
| John Raymond Markus | William Shakhverdian | 1-0 | D02 | Round 5: John Raymond Markus - William Shakhverdian | 2022-10-19 |
| John Raymond Markus | Leendert Hartgers | 1-0 | A57 | Round 3: John Raymond Markus - Leendert Hartgers | 2022-10-17 |
| John Raymond Markus | Ruud Winkel | 1-0 | D02 | Round 1: John Raymond Markus - Ruud Winkel | 2022-10-15 |
| John Raymond Markus | Marcel Harff | 0-1 | A46 | Round 1: John Raymond Markus - Marcel Harff | 2022-06-17 |