| Jan 2, 2026 | Siddharth | 0–1 | Herzwurm | Round 9: Siddharth, Gopakumar - Herzwurm, Robert | French Defense: Tarrasch Variation, Closed Variation, Main Line | |
| Jan 1, 2026 | Herzwurm | ½–½ | Eldridge | Round 8: Herzwurm, Robert - Eldridge, Albert | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jan 1, 2026 | Bryant | 1–0 | Herzwurm | Round 7: Bryant, Harry - Herzwurm, Robert | French Defense: Advance Variation, Euwe Variation | |
| Dec 31, 2025 | Herzwurm | ½–½ | Manmay Chopra | Round 6: Herzwurm, Robert - Manmay Chopra | French Defense: Advance Variation, Paulsen Attack | |
| Dec 30, 2025 | Williams | 1–0 | Herzwurm | Round 5: Williams, Simon K - Herzwurm, Robert | Trompowsky Attack: Raptor Variation | |
| Dec 30, 2025 | Herzwurm | 1–0 | Swiatkowski | Round 4: Herzwurm, Robert - Swiatkowski, Aram | French Defense: Advance Variation, Milner-Barry Gambit, Hector Variation | |
| Dec 29, 2025 | Herzwurm | 1–0 | Ratcliffe | Round 3: Herzwurm, Robert - Ratcliffe, James | Sicilian Defense: Grand Prix Attack | |
| Dec 29, 2025 | Vaidyanathan | 1–0 | Herzwurm | Round 2: Vaidyanathan, Adithya - Herzwurm, Robert | King's Indian Defense: Normal Variation, Rare Defenses | |
| Dec 28, 2025 | Swiatkowski | 0–1 | Herzwurm | Round 1: Swiatkowski, Dominik - Herzwurm, Robert | French Defense: King's Indian Attack | |
| Dec 19, 2025 | Herzwurm | 0–1 | Samaganova | Sunway Sitges 2025 | French Defense: Advance Variation, Paulsen Attack | |
| Nov 1, 2025 | Aden | 1–0 | Herzwurm | Runde 7: Aden, Tammo - Herzwurm, Robert | King's Indian Defense: Orthodox Variation, Glek Defense | |
| Nov 1, 2025 | Herzwurm | 1–0 | Thiercelin | Runde 6: Herzwurm, Robert - Thiercelin, Jerome | Caro-Kann Defense: Advance Variation, Short Variation | |
| Nov 1, 2025 | Ulrich | 0–1 | Herzwurm | Runde 5: Ulrich, Helena Irene - Herzwurm, Robert | French Defense: Tarrasch Variation, Closed Variation, Main Line | |
| Oct 31, 2025 | Herzwurm | ½–½ | Wellen | Runde 4: Herzwurm, Robert - Wellen, Hendrik | Italian Game: Evans Gambit, Tartakower Attack | |
| Oct 31, 2025 | Kather | ½–½ | Herzwurm | Runde 3: Kather, Yannick - Herzwurm, Robert | French Defense: Advance Variation, Euwe Variation | |
| Oct 30, 2025 | Herzwurm | 1–0 | Kipka | Runde 2: Herzwurm, Robert - Kipka, Eberhard | Sicilian Defense: Grand Prix Attack | |
| Oct 30, 2025 | Khachatryan | 1–0 | Herzwurm | Runde 1: Khachatryan, Taron - Herzwurm, Robert | East Indian Defense | |
| Oct 18, 2025 | Herzwurm | 1–0 | Molinaroli | Runde 9: Herzwurm, Robert - Molinaroli, Martin | Owen Defense | |
| Oct 17, 2025 | Veehmayer | 0–1 | Herzwurm | Runde 8: Veehmayer, Mio - Herzwurm, Robert | Zukertort Opening: Nimzo-Larsen Variation | |
| Oct 15, 2025 | Klemenz | 1–0 | Herzwurm | Runde 6: Klemenz, Luca - Herzwurm, Robert | French Defense: Tarrasch Variation, Pawn Center Variation | |
| Oct 14, 2025 | Herzwurm | 1–0 | Schroeder | Runde 5: Herzwurm, Robert - Schroeder, Simon | French Defense: Advance Variation, Milner-Barry Gambit, Hector Variation | |
| Oct 12, 2025 | Herzwurm | 0–1 | Mazur | Runde 3: Herzwurm, Robert - Mazur, Stefan | Scotch Game: Scotch Gambit, Advance Variation | |
| Oct 12, 2025 | Siebert | 0–1 | Herzwurm | Runde 2: Siebert, Marco Leander - Herzwurm, Robert | French Defense: Winawer Variation, Alekhine Gambit, Kan Variation | |
| Oct 11, 2025 | Herzwurm | 0–1 | Vollbehr | Runde 1: Herzwurm, Robert - Vollbehr, Bjarne | Scotch Game: Scotch Gambit, Advance Variation | |
| Dec 12, 2024 | Herzwurm | 0–1 | Hess | XI Sunway Sitges International Chess Festival 2024 - Group A | Sicilian Defense: Grand Prix Attack | |
| Oct 19, 2024 | Herzwurm | 1–0 | Woestmann | Round 9: Herzwurm, Robert - Woestmann, Hans-Joachim | French Defense: Advance Variation, Milner-Barry Gambit, Hector Variation | |
| Oct 18, 2024 | Kummerow | 1–0 | Herzwurm | Round 8: Kummerow, Heiko - Herzwurm, Robert | French Defense: Tarrasch Variation, Closed Variation | |
| Oct 17, 2024 | Herzwurm | 1–0 | Schalow | Round 7: Herzwurm, Robert - Schalow, Daniel | Sicilian Defense: Closed | |
| Oct 16, 2024 | Marcziter | ½–½ | Herzwurm | Round 6: Marcziter, Alex - Herzwurm, Robert | French Defense: Advance Variation, Euwe Variation | |
| Oct 14, 2024 | Herzwurm | 0–1 | Tomasjan | Round 4: Herzwurm, Robert - Tomasjan, Samuel | French Defense: Advance Variation, Milner-Barry Gambit, Hector Variation | |
| Oct 12, 2024 | Herzwurm | 0–1 | Menzel | Round 1: Herzwurm, Robert - Menzel, Maximilian | Caro-Kann Defense: Advance Variation, Short Variation | |
| Nov 3, 2024 | Wagner | 1–0 | Herzwurm | Round 7: Wagner, Jan - Herzwurm, Robert | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Nov 2, 2024 | Herzwurm | 0–1 | Pahl | Round 5: Herzwurm, Robert - Pahl, Theis | Sicilian Defense: Closed | |
| Nov 2, 2024 | Hansch | 0–1 | Herzwurm | Round 6: Hansch, Torsten - Herzwurm, Robert | King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System | |
| Nov 1, 2024 | Herzwurm | 1–0 | Boesel | Round 3: Herzwurm, Robert - Boesel, Alexander | Sicilian Defense: Closed | |
| Nov 1, 2024 | Gellrich | ½–½ | Herzwurm | Round 4: Gellrich, Peter - Herzwurm, Robert | King's Indian Defense: Averbakh Variation, Benoni Defense, Advance Variation | |
| Oct 31, 2024 | Herzwurm | 1–0 | Wagner | Round 1: Herzwurm, Robert - Wagner, Benjamin | Italian Game: Evans Gambit, Mieses Defense | |
| Oct 31, 2024 | Spiric | 1–0 | Herzwurm | Round 2: Spiric, Igor - Herzwurm, Robert | King's Indian Defense: Sämisch Variation, Sämisch Gambit | |