| 22 jul 2026 | Huettemann, Karl-Heinz 2016 | Vatter, Hans-Joachim 2124 | ½-½ | A10 Apertura Inglesa | German Chess Championship 2026 | Seniors 65+ | 32 | Ver |
| 21 jul 2026 | Vatter, Hans-Joachim 2124 | Knaak, Rainer 2381 | 0-1 | A09 Apertura Réti: Advance Variation | German Chess Championship 2026 | Seniors 65+ | 79 | Ver |
| 8 mar 2026 | Hryshko, Vitalii 2349 | Vatter, Hans-Joachim 2135 | 1-0 | D00 Apertura de Peón de Dama: Chigorin Variation, Alburt Defense | Rapide Festival Nancy 2026 | 39 | Ver |
| 8 mar 2026 | Vatter, Hans-Joachim 2135 | GULIYEV, Namig 2507 | 0-1 | B40 Defensa Siciliana: Delayed Alapin Variation, with e6 | Rapide Festival Nancy 2026 | 40 | Ver |
| 8 mar 2026 | Baltzer, Yoan 2212 | Vatter, Hans-Joachim 2135 | 0-1 | A44 Defensa Benoni: Old Benoni | Rapide Festival Nancy 2026 | 33 | Ver |
| 8 mar 2026 | Vatter, Hans-Joachim 2135 | BAUER, Christian 2568 | 0-1 | B30 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack | Rapide Festival Nancy 2026 | 18 | Ver |
| 8 mar 2026 | Vatter, Hans-Joachim 2135 | Zienkiewicz, Jan 2406 | 1-0 | B06 Defensa Moderna: Standard Line | Rapide Festival Nancy 2026 | 87 | Ver |
| 7 mar 2026 | Adrian, Claude 2080 | Vatter, Hans-Joachim 2046 | 0-1 | D02 Apertura de Peón de Dama: Zukertort Variation | Blitz Festival Nancy 2026 | 30 | Ver |
| 7 mar 2026 | Vatter, Hans-Joachim 2046 | Decuigniere, Tom 2359 | 0-1 | B53 Defensa Siciliana: Chekhover Variation | Blitz Festival Nancy 2026 | 49 | Ver |
| 30 nov 2025 | Vatter, Hans-Joachim 2067 | Mehmeti, Shqipdon 2206 | 0-1 | A45 Ataque Trompowsky | European Rapid & Blitz Chess Championships 2025 | Blitz | 24 | Ver |
| 30 nov 2025 | Vatter, Hans-Joachim 2067 | D`Costa, Lorin 2349 | 0-1 | B42 Defensa Siciliana: Kan Variation, Polugaevsky Variation | European Rapid & Blitz Chess Championships 2025 | Blitz | 25 | Ver |
| 30 nov 2025 | Vatter, Hans-Joachim 2067 | Idrizaj, Abedin 2340 | 0-1 | B53 Defensa Siciliana: Chekhover Variation | European Rapid & Blitz Chess Championships 2025 | Blitz | 27 | Ver |
| 30 nov 2025 | Vatter, Hans-Joachim 2067 | Kalezic, Blazo 2471 | 0-1 | C02 Defensa Francesa: Advance Variation, Paulsen Attack | European Rapid & Blitz Chess Championships 2025 | Blitz | 12 | Ver |
| 29 nov 2025 | Vatter, Hans-Joachim 2136 | Plenca, Jadranko 2430 | 0-1 | B28 Defensa Siciliana: O'Kelly Variation, Venice System | European Rapid & Blitz Chess Championships 2025 | Rapid | 29 | Ver |
| 28 nov 2025 | Pultinevicius, Paulius 2566 | Vatter, Hans-Joachim 2136 | 1-0 | A20 Apertura Inglesa: King's English Variation | European Rapid & Blitz Chess Championships 2025 | Rapid | 22 | Ver |
| 27 sep 2025 | Vatter, Hans-Joachim 2178 | Neumann, Joachim 2029 | 1-0 | B33 Defensa Siciliana: Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation | German Senior Team Championship of the State Associations | S65 | 73 | Ver |
| 26 sep 2025 | Vatter, Hans-Joachim 2178 | Zimmermann, Rolf 2125 | ½-½ | B01 Defensa Escandinava: Main Line | German Senior Team Championship of the State Associations | S65 | 20 | Ver |
| 25 sep 2025 | Schulz, Michael 2103 | Vatter, Hans-Joachim 2178 | 1-0 | A45 Ataque Trompowsky | German Senior Team Championship of the State Associations | S65 | 29 | Ver |
| 24 sep 2025 | Vatter, Hans-Joachim 2178 | Seyb, Dieter 2151 | ½-½ | B00 Defensa Nimzowitsch: Scandinavian Variation, Advance Variation | German Senior Team Championship of the State Associations | S65 | 21 | Ver |
| 23 sep 2025 | Waldschlaeger, Juergen 2109 | Vatter, Hans-Joachim 2178 | 0-1 | A04 Apertura Zukertort: Queenside Fianchetto Variation | German Senior Team Championship of the State Associations | S65 | 25 | Ver |