| — | Gremmel | 0–1 | Weihrauch | Grenke Open | Yusupov-Rubinstein System | |
| — | Kniest | ½–½ | Gremmel | Grenke Open | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 1, 2025 | zur Bruegge | 0–1 | Gremmel | Runde 7: zur Bruegge, Carsten - Gremmel, Jonas Simon | Caro-Kann Defense: Advance Variation, Van der Wiel Attack | |
| Nov 1, 2025 | Gremmel | 1–0 | Pflug | Runde 6: Gremmel, Jonas Simon - Pflug, Anton | Benoni Defense: Classical Variation, Averbakh-Grivas Attack | |
| Nov 1, 2025 | Weirauch | 0–1 | Gremmel | Runde 5: Weirauch, Kevin - Gremmel, Jonas Simon | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Oct 31, 2025 | Gremmel | 0–1 | Hofmann | Runde 4: Gremmel, Jonas Simon - Hofmann, Benjamin | Queen's Gambit Declined: Tartakower Defense, Makogonov Exchange Variation | |
| Oct 31, 2025 | Hauernherm | ½–½ | Gremmel | Runde 3: Hauernherm, Stefan - Gremmel, Jonas Simon | Zukertort Opening | |
| Oct 30, 2025 | Gremmel | 0–1 | Holtel | Runde 2: Gremmel, Jonas Simon - Holtel, Jasper | Grünfeld Defense: Three Knights Variation, Hungarian Variation | |
| Oct 30, 2025 | Haertel | 0–1 | Gremmel | Runde 1: Haertel, Leon - Gremmel, Jonas Simon | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Mar 28, 2024 | Vogel | 1–0 | Gremmel | Grenke Chess Open 2024 | Zukertort Opening | |
| Nov 3, 2024 | Udelnov | 0–1 | Gremmel | Round 7: Udelnov, Valentin - Gremmel, Jonas Simon | Caro-Kann Defense: Advance Variation, Short Variation | |
| Nov 2, 2024 | Gremmel | ½–½ | Brandes | Round 6: Gremmel, Jonas Simon - Brandes, Stephan | Indian Defense: Wade-Tartakower Defense | |
| Nov 2, 2024 | Nedic | ½–½ | Gremmel | Round 5: Nedic, Dusan - Gremmel, Jonas Simon | Queen's Pawn Game: Accelerated London System | |
| Nov 1, 2024 | Gremmel | 0–1 | Kopylov | Round 4: Gremmel, Jonas Simon - Kopylov, Michael | Benoni Defense: Benoni-Indian Defense, Kingside Move Order | |
| Nov 1, 2024 | Nechitaylo | 0–1 | Gremmel | Round 3: Nechitaylo, Nikita - Gremmel, Jonas Simon | Caro-Kann Defense: Panov Attack, Fianchetto Defense, Fianchetto Gambit | |
| Oct 31, 2024 | Gremmel | 1–0 | Schaefer | Round 2: Gremmel, Jonas Simon - Schaefer, Maik | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Oct 31, 2024 | de Vries | 0–1 | Gremmel | Round 1: de Vries, Carsten - Gremmel, Jonas Simon | Caro-Kann Defense: Exchange Variation | |
