| Mar 25, 2026 | Makkar | 1–0 | Althoff | Reykjavik Open 2026 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Oct 18, 2025 | Michalicek | 0–1 | Althoff | Runde 9: Michalicek, Roland - Althoff, Ralph | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Oct 17, 2025 | Althoff | 0–1 | Amini | Runde 8: Althoff, Ralph - Amini, Yusuf | Queen's Pawn Game: Accelerated London System | |
| Oct 16, 2025 | Damen | ½–½ | Althoff | Runde 7: Damen, Josephine - Althoff, Ralph | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Oct 15, 2025 | Althoff | ½–½ | Seifert | Runde 6: Althoff, Ralph - Seifert, Hendrik | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Oct 14, 2025 | Cassel | 0–1 | Althoff | Runde 5: Cassel, Silas - Althoff, Ralph | Queen's Pawn Game: Symmetrical Variation | |
| Oct 13, 2025 | Althoff | 0–1 | Felczer | Runde 4: Althoff, Ralph - Felczer, Kevin | Pseudo Queen's Indian Defense | |
| Oct 12, 2025 | Becker | 0–1 | Althoff | Runde 3: Becker, Daniel - Althoff, Ralph | Sicilian Defense: Closed | |
| Oct 12, 2025 | Althoff | 0–1 | Kersten | Runde 2: Althoff, Ralph - Kersten, Uwe | Sicilian Defense: Accelerated Dragon, Maróczy Bind, Gurgenidze Variation | |
| Apr 21, 2025 | Althoff | ½–½ | Gieseler | Round 9: Althoff, Ralph - Gieseler, Felix | Trompowsky Attack | |
| Apr 21, 2025 | Grosser | * | Althoff | Round 8: Grosser, Walter - Althoff, Ralph | ? | |
| Apr 20, 2025 | Althoff | 0–1 | Jonas Markgraf | Round 7: Althoff, Ralph - Jonas Markgraf | Trompowsky Attack | |
| Apr 20, 2025 | Panjer | 1–0 | Althoff | Round 6: Panjer, Sidney - Althoff, Ralph | Bogo-Indian Defense: Retreat Variation | |
| Apr 19, 2025 | Nezhyvenko | ½–½ | Althoff | Round 5: Nezhyvenko, Mykhaylo - Althoff, Ralph | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Apr 19, 2025 | Althoff | 1–0 | Wolfer | Round 4: Althoff, Ralph - Wolfer, Noah | Trompowsky Attack | |
| Apr 18, 2025 | Weidert | 0–1 | Althoff | Round 3: Weidert, Florian - Althoff, Ralph | Sicilian Defense: Mengarini Variation | |
| Apr 18, 2025 | Althoff | 1–0 | Mischke Ramirez | Round 2: Althoff, Ralph - Mischke Ramirez, Daniel Enrique | Queen's Pawn Game: Accelerated London System | |
| Jul 22, 2022 | Petz | * | Althoff | open | ? | |
| Jul 21, 2022 | Althoff | * | Doerr | open | ? | |
| Jul 19, 2022 | Althoff | * | Pick | open | ? | |
| Aug 8, 2021 | Althoff | 0–1 | Madajczak | wro-open-a | Dutch Defense: Raphael Variation | |
| Aug 7, 2021 | Quinn | 0–1 | Althoff | wro-open-a | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Aug 6, 2021 | Althoff | 1–0 | Leipert | wro-open-a | Indian Defense: London System | |
| Aug 5, 2021 | Maksimenko | 1–0 | Althoff | wro-open-a | Sicilian Defense: Accelerated Dragon, Maróczy Bind, Breyer Variation | |
| Aug 4, 2021 | Schletter | 1–0 | Althoff | wro-open-a | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Aug 3, 2021 | Althoff | 1–0 | Krawiec | wro-open-a | Indian Defense: London System | |
| Aug 2, 2021 | Gradalski | 1–0 | Althoff | wro-open-a | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Aug 1, 2021 | Althoff | ½–½ | Kejna | wro-open-a | Indian Defense: Przepiorka Variation | |
| Aug 1, 2021 | Bielan | ½–½ | Althoff | wro-open-a | Hungarian Opening: Sicilian Invitation | |
