| Jul 10, 2025 | Podat | 1–0 | Mueller | 10. Offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Sicilian Defense: Open | |
| Jul 9, 2025 | Mueller | ½–½ | Vatter | 10. Offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Queen's Pawn Game: London System | |
| Jul 8, 2025 | Mueller | ½–½ | Strobel | 10. Offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Queen's Pawn Game: London System | |
| Jul 7, 2025 | Kraft | 0–1 | Mueller | 10. Offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Semi-Slav Defense | |
| Jul 6, 2025 | Mueller | ½–½ | Roos | 10. Offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Queen's Pawn Game: London System | |
| Apr 3, 2025 | Heinbuch | 1–0 | Mueller | Round 6: Heinbuch, Detlef Ulrich - Mueller, Michael | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Apr 2, 2025 | Mueller | ½–½ | Cordts | Round 5: Mueller, Michael - Cordts, Ingo | Queen's Pawn Game: London System | |
| Apr 1, 2025 | Hess | ½–½ | Mueller | Round 4: Hess, Christian - Mueller, Michael | English Opening: Agincourt Defense, Bogoljubow Defense | |
| Mar 31, 2025 | Mueller | 1–0 | Harsch | Round 3: Mueller, Michael - Harsch, Martin | Queen's Pawn Game: London System | |
| Jul 13, 2024 | Mueller | ½–½ | Namyslo | 9. offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Queen's Pawn Game: London System | |
| Jul 12, 2024 | Heck | ½–½ | Mueller | 9. offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Catalan Opening: Closed | |
| Jul 11, 2024 | Mueller | 1–0 | Weisenburger | 9. offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Queen's Pawn Game | |
| Jul 10, 2024 | Arlt | 0–1 | Mueller | 9. offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jul 9, 2024 | Mueller | ½–½ | Witke | 9. offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Slav Defense: Exchange Variation | |
| Apr 11, 2024 | Mueller | 0–1 | Luciani | Round 6: Mueller, Michael - Luciani, Carlo | Benoni Defense: Old Benoni | |
| Apr 9, 2024 | Heinbuch | 1–0 | Mueller | Round 4: Heinbuch, Detlef Ulrich - Mueller, Michael | English Opening: Agincourt Defense, Bogoljubow Defense | |
| Apr 8, 2024 | Mueller | ½–½ | Vatter | Round 3: Mueller, Michael - Vatter, Hans-Joachim | Indian Defense: London System | |
| Oct 15, 2023 | Moeller | 1–0 | Mueller | OSSEM 2022 | Queen's Pawn Game: Zukertort Variation | |
| Oct 14, 2023 | Mueller | ½–½ | Okrajek | OSSEM 2022 | London System | |
| Oct 13, 2023 | Mueller | 1–0 | Haase | new tournament description | Queen's Pawn Game: London System, with e6 | |
| Oct 12, 2023 | Wichmann | 1–0 | Mueller | new tournament description | ? | |
| Oct 11, 2023 | Mueller | 1–0 | Proschmann | 31. offene S?chsische Senioren-Einzelmeisterschaft | Queen's Pawn Game: London System | |
| Oct 10, 2023 | Ellerbrock | 0–1 | Mueller | 31. offene S?chsische Senioren-Einzelmeisterschaft | Queen's Gambit Declined: Baltic Defense, Pseudo-Slav | |
| Oct 9, 2023 | Mueller | 1–0 | Costello | 31. offene S?chsische Senioren-Einzelmeisterschaft | Indian Defense: London System | |