| 9 ago 2026 | Petersen, Henrik 2292 | Bahner, Julius 2010 | 1-0 | B10 Defensa Caro-Kann | Kreuzberger Schachsommer - Werner-Ott-Open 2026 | 60 | Ver |
| 6 ago 2026 | Schmidt, Florian Pascal 2093 | Petersen, Henrik 2292 | 0-1 | B90 Defensa Siciliana: Najdorf Variation, English Attack | Kreuzberger Schachsommer - Werner-Ott-Open 2026 | 77 | Ver |
| 5 ago 2026 | Petersen, Henrik 2292 | Beduschi, Ben 2017 | 1-0 | A06 Ataque Nimzo-Larsen: Classical Variation | Kreuzberger Schachsommer - Werner-Ott-Open 2026 | 52 | Ver |
| 4 ago 2026 | Tschernatsch, Johannes 2309 | Petersen, Henrik 2292 | ½-½ | D16 Defensa Eslava: Soultanbeieff Variation | Kreuzberger Schachsommer - Werner-Ott-Open 2026 | 34 | Ver |
| 3 ago 2026 | Petersen, Henrik 2292 | Zhang, Onno 2038 | 1-0 | B93 Defensa Siciliana: Najdorf Variation, Amsterdam Variation | Kreuzberger Schachsommer - Werner-Ott-Open 2026 | 40 | Ver |
| 30 jul 2026 | Petersen, Henrik 2292 | Eilenberg, Jonas 2388 | 0-1 | B31 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | Kreuzberger Schachsommer - Werner-Ott-Open 2026 | 30 | Ver |
| 23 jul 2026 | Turel, Tugrul 2182 | Petersen, Henrik 2296 | 1-0 | B50 Defensa Siciliana: Modern Variations | German Amateur Chess Championship 2026 (DSAM) | Group A | 44 | Ver |
| 7 jun 2026 | Petersen, Henrik 2321 | Khrapko, Marharyta 2101 | 0-1 | B22 Defensa Siciliana: Alapin Variation, Barmen Defense | 16. Rheinland-Pfalz Open | 55 | Ver |
| 6 jun 2026 | Petersen, Henrik 2321 | Aumueller, Naum 2149 | 0-1 | B51 Defensa Siciliana: Moscow Variation | 16. Rheinland-Pfalz Open | 35 | Ver |
| 5 jun 2026 | Mukazhanov, Mansur 2142 | Petersen, Henrik 2321 | ½-½ | B01 Defensa Escandinava: Main Line | 16. Rheinland-Pfalz Open | 43 | Ver |
| 5 jun 2026 | Petersen, Henrik 2321 | Buerger, Helmut 2066 | 1-0 | B01 Defensa Escandinava: Bronstein Variation | 16. Rheinland-Pfalz Open | 47 | Ver |
| 16 may 2026 | Petersen, Henrik 2299 | Torosyan, Bagrat 2232 | 0-1 | B40 Defensa Siciliana: French Variation | Rudolf Teschner Memorial 2026 | 53 | Ver |
| 16 may 2026 | Barp, Alberto 2435 | Petersen, Henrik 2299 | 1-0 | E11 Defensa Bogoindia: Retreat Variation | Rudolf Teschner Memorial 2026 | 23 | Ver |
| 13 may 2026 | Petersen, Henrik 2299 | Schmidek, Emil 2453 | 1-0 | B10 Defensa Caro-Kann: Endgame Variation | Rudolf Teschner Memorial 2026 | 53 | Ver |
| 30 dic 2025 | Petersen, Henrik 2297 | Herrmann, Jakob 2196 | ½-½ | B14 Defensa Caro-Kann: Panov Attack | 8. Internationales Spandauer Weihnachtsopen 2025 | 30 | Ver |
| 29 dic 2025 | Boeddeker, Henry 2127 | Petersen, Henrik 2297 | 0-1 | B10 Defensa Caro-Kann: Two Knights Attack | 8. Internationales Spandauer Weihnachtsopen 2025 | 48 | Ver |
| 29 dic 2025 | Petersen, Henrik 2297 | Gebigke, Martin 2094 | 1-0 | B66 Defensa Siciliana: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations | 8. Internationales Spandauer Weihnachtsopen 2025 | 50 | Ver |
| 28 dic 2025 | Yatskar, Martin 2260 | Petersen, Henrik 2297 | 1-0 | A65 Defensa Benoni: King's Pawn Line | 8. Internationales Spandauer Weihnachtsopen 2025 | 51 | Ver |
| 28 dic 2025 | Petersen, Henrik 2297 | Rose, Daniel 2081 | 1-0 | C02 Defensa Francesa: Advance Variation, Paulsen Attack | 8. Internationales Spandauer Weihnachtsopen 2025 | 25 | Ver |