11 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Kostelny, Jozef | Kantorik, Marian | 1/2-1/2 | A11 | Tatrafest 2026 Open Tatry | 2026-05-23 |
| Kostelny, Jozef | Holicky, Miroslav | 1-0 | D91 | Tatrafest 2026 Open Tatry | 2026-05-22 |
| Kostelny, Jozef | Nemeckay, Rastislav | 1-0 | A11 | Tatrafest 2026 Open Tatry | 2026-05-18 |
| Kostelny, Jozef | Palka, Dominika Katarzyna | 0-1 | A14 | Tatrafest 2026 Open Tatry | 2026-05-17 |
| Kostelny, Jozef | Vojta, Tomas | 0-1 | A25 | Tatrafest 2026 Open Tatry | 2026-05-17 |
| Kostelny, Jozef | Frank, Adam | 0-1 | D34 | Round 2: Kostelny, Jozef - Frank, Adam | 2025-07-18 |