| Apr 3, 2026 | Schaefer | 0–1 | Petz | Landesjugendeinzelmeisterschaft in Niedersachsen U14 | Sicilian Defense: Alapin Variation, Barmen Defense, Modern Line | |
| Apr 2, 2026 | Petz | ½–½ | Kowalczik | Landesjugendeinzelmeisterschaft in Niedersachsen U14 | Rubinstein Opening: Classical Defense | |
| Apr 1, 2026 | Bundan | 1–0 | Petz | Landesjugendeinzelmeisterschaft in Niedersachsen U14 | Sicilian Defense: Kan Variation, Polugaevsky Variation | |
| Apr 1, 2026 | Nguyen | 0–1 | Petz | Landesjugendeinzelmeisterschaft in Niedersachsen U14 | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Mar 31, 2026 | Petz | 0–1 | Tarasenko | Landesjugendeinzelmeisterschaft in Niedersachsen U14 | Sicilian Defense: Chekhover Variation | |
| Mar 30, 2026 | Petz | ½–½ | Maraun | Landesjugendeinzelmeisterschaft in Niedersachsen U14 | Caro-Kann Defense: Two Knights Attack | |
| Mar 30, 2026 | Janulis | 0–1 | Petz | Landesjugendeinzelmeisterschaft in Niedersachsen U14 | Bird Opening: Dutch Variation | |
| Mar 29, 2026 | Petz | 1–0 | Debus | Landesjugendeinzelmeisterschaft in Niedersachsen U14 | Sicilian Defense: Prins Variation | |
| Mar 28, 2026 | Rinke | ½–½ | Petz | Landesjugendeinzelmeisterschaft in Niedersachsen U14 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Oct 18, 2025 | Petz | 1–0 | Spielfrei | Round 9: Petz, Hagen - Spielfrei | ? | |
| Oct 18, 2025 | Petz | 1–0 | Elshad Yunusov | Round 8: Petz, Hagen - Elshad Yunusov | ? | |
| Oct 18, 2025 | Lueders Vega | 1–0 | Petz | Round 7: Lueders Vega, Iago Ernst - Petz, Hagen | ? | |
| Oct 18, 2025 | Petz | 0–1 | Hagemann | Round 6: Petz, Hagen - Hagemann, Sven | ? | |
| Oct 18, 2025 | Petz | 0–1 | Nguyen | Round 5: Petz, Hagen - Nguyen, Phuc Nhat | ? | |
| Oct 18, 2025 | Ziems | 0–1 | Petz | Round 4: Ziems, Michael - Petz, Hagen | ? | |
| Oct 18, 2025 | Stelmaszyk | 1–0 | Petz | Round 3: Stelmaszyk, Nico - Petz, Hagen | ? | |
| Oct 18, 2025 | Petz | 1–0 | Kovalov | Round 2: Petz, Hagen - Kovalov, Yaroslav | ? | |
| Oct 18, 2025 | Seyrek | ½–½ | Petz | Round 1: Seyrek, Rohat - Petz, Hagen | ? | |
| Apr 18, 2025 | Petz | 1–0 | Thomas Wozniak | Runde 9: Petz, Hagen - Thomas Wozniak | Sicilian Defense: Prins Variation | |
| Apr 16, 2025 | Krueger | ½–½ | Petz | Runde 7: Krueger, Moritz - Petz, Hagen | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Apr 16, 2025 | Buergener | 0–1 | Petz | Runde 6: Buergener, Richard - Petz, Hagen | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Apr 15, 2025 | Petz | ½–½ | Henry Haustein | Runde 5: Petz, Hagen - Henry Haustein | Vienna Game: Vienna Gambit, Main Line | |
| Apr 14, 2025 | Levytskyi | 0–1 | Petz | Runde 4: Levytskyi, Oleksandr - Petz, Hagen | Caro-Kann Defense: Main Line | |
| Apr 13, 2025 | Petz | 1–0 | Margaryan | Runde 3: Petz, Hagen - Margaryan, Mari | French Defense: King's Indian Attack | |
| Apr 13, 2025 | Maraun | 1–0 | Petz | Runde 2: Maraun, Lias - Petz, Hagen | Caro-Kann Defense: Maróczy Variation | |
| Apr 12, 2025 | Petz | 1–0 | Klages | Runde 1: Petz, Hagen - Klages, Jonas | French Defense: Winawer Variation | |
| Apr 11, 2025 | Petz | 0–1 | Bundan | Runde 8: Petz, Hagen - Bundan, Edward | Sicilian Defense: Alapin Variation | |
