| Feb 26, 2026 | Poetsch | 1–0 | Andersen | 42e Open de Cappelle | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Feb 23, 2026 | ANDERSEN | 0–1 | Can | 42e Open de Cappelle | Zukertort Opening: Kingside Fianchetto | |
| Jan 5, 2025 | Andersen | 1–0 | Thomforde-Toates | Round 6: Andersen, Gunnar - Thomforde-Toates, Noah | Sicilian Defense: Hyperaccelerated Dragon | |
| Jan 4, 2025 | Andersen | 1–0 | Platnick | Round 4: Andersen, Gunnar - Platnick, Elijah | Rapport-Jobava System | |
| Jan 4, 2025 | Yip | ½–½ | Andersen | Round 5: Yip, Carissa - Andersen, Gunnar | Zukertort Opening | |
| Jan 3, 2025 | Andersen | 1–0 | Antova | Round 3: Andersen, Gunnar - Antova, Gabriela | King's Indian Attack: Yugoslav Variation | |
| Jan 3, 2025 | Budisavljevic | 1–0 | Andersen | Round 2: Budisavljevic, Luka - Andersen, Gunnar | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Aug 10, 2024 | Andersen | 0–1 | Atanasov | 11th Annual Washington International - Championship | Petrov's Defense: Nimzowitsch Attack | |
| Aug 10, 2024 | Andersen | ½–½ | Rorrer | 11th Annual Washington International - Championship | King's Indian Attack | |
| Aug 10, 2024 | Mikaelyan | 1–0 | Andersen | 11th Annual Washington International - Championship | Tarrasch Defense: Symmetrical Variation | |
| Aug 10, 2024 | Liang | 1–0 | Andersen | Round 1: Liang, Awonder - Andersen, Gunnar | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 7, 2024 | Andersen | * | Perez Gormaz | 52nd Annual World Open | Caro-Kann Defense: Two Knights Attack | |
| Jul 7, 2024 | Andersen | ½–½ | Matias Gomaz Perez | 52nd Annual World Open | Caro-Kann Defense: Two Knights Attack | |
| Jul 7, 2024 | Schmakel | 1–0 | Andersen | 52nd Annual World Open | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 6, 2024 | Andersen | 1–0 | Guha | 52nd Annual World Open | French Defense: King's Indian Attack | |
| Jul 6, 2024 | Tokhirjonova | ½–½ | Andersen | 52nd Annual World Open | Sicilian Defense: Nimzowitsch Variation, Advance Variation | |
| Jul 5, 2024 | Andersen | 1–0 | Chandi | 52nd Annual World Open | Sicilian Defense: Old Sicilian | |
| Jul 5, 2024 | Kumarappan | ½–½ | Andersen | 52nd Annual World Open | Sicilian Defense: Nimzowitsch Variation, Advance Variation | |
| Jul 5, 2024 | Utiatskaja | ½–½ | Andersen | 52nd Annual World Open | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 4, 2024 | Andersen | 0–1 | Corrales Jimenez | 52nd Annual World Open | Sicilian Defense: Richter-Rauzer Variation, Vitolins Variation | |
| Jul 4, 2024 | Mottola | 0–1 | Andersen | 52nd Annual World Open | Sicilian Defense: Nimzowitsch Variation, Main Line | |
| Aug 20, 2023 | Andersen | 0–1 | Fetiveau | Round 5: Andersen, Gunnar - Fetiveau, Arthur | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Aug 19, 2023 | Gonella | 1–0 | Andersen | Round 4: Gonella, Daniele - Andersen, Gunnar | Queen's Pawn Game: Modern Defense | |
| Aug 18, 2023 | Andersen | 1–0 | Gioseffi | Round 3: Andersen, Gunnar - Gioseffi, Massimiliano | Rapport-Jobava System | |
| Aug 18, 2023 | Saketh Pedagandham | ½–½ | Andersen | Round 2: Saketh Pedagandham - Andersen, Gunnar | Modern Defense: Lizard Defense, Mittenberger Gambit | |
| Aug 17, 2023 | Andersen | 0–1 | Pedoni Lorenzo | Round 1: Andersen, Gunnar - Pedoni Lorenzo | Rapport-Jobava System | |
| Aug 13, 2023 | Piddubna | ½–½ | Andersen | 12. Split Open 05.-13.08.2023. | Neo-Grünfeld Defense: Classical Variation, Polgar Variation | |
| Aug 12, 2023 | Andersen | 1–0 | Simunic | 12. Split Open 05.-13.08.2023. | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Aug 11, 2023 | Zylka | 1–0 | Andersen | 12. Split Open 05.-13.08.2023. | King's Indian Defense: Normal Variation, Rare Defenses | |
| Aug 9, 2023 | Andersen | 0–1 | Morgunov | 12. Split Open 05.-13.08.2023. | Ruy Lopez: Closed, Anti-Marshall | |
| Aug 8, 2023 | Grgantov | 0–1 | Andersen | 12. Split Open 05.-13.08.2023. | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Aug 7, 2023 | Andersen | 1–0 | Lohr | 12. Split Open 05.-13.08.2023. | Sicilian Defense: Najdorf Variation | |
| Aug 6, 2023 | Pehar | ½–½ | Andersen | 12. Split Open 05.-13.08.2023. | Sicilian Defense: Kalashnikov Variation | |
