| Apr 28, 2026 | Olafsson | ½–½ | Nunn | Round 9: Olafsson, Helgi - Nunn, John D M | King's Indian Defense: Fianchetto Variation | |
| Apr 26, 2026 | Westerinen | 0–1 | Nunn | Round 7: Westerinen, Heikki M.J. - Nunn, John D M | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Apr 25, 2026 | Nunn | ½–½ | Jussupow | Round 6: Nunn, John D M - Jussupow, Artur | Petrov's Defense: Modern Attack, Center Variation | |
| Apr 21, 2026 | Ftacnik | ½–½ | Nunn | Round 3: Ftacnik, Lubomir - Nunn, John D M | King's Indian Defense: Orthodox Variation, Classical System | |
| Apr 20, 2026 | Nunn | 1–0 | Akesson | Round 2: Nunn, John D M - Akesson, Ralf | French Defense: Advance Variation | |
| Apr 19, 2026 | Bachler | 0–1 | Nunn | Round 1: Bachler, Reinhard - Nunn, John D M | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Apr 18, 2026 | Gruenfeld | ½–½ | Nunn | Round 5: Gruenfeld, Yehuda - Nunn, John D M | Sicilian Defense: Moscow Variation | |
| Apr 18, 2026 | Nunn | ½–½ | Maier | Round 4: Nunn, John D M - Maier, Christian | Italian Game: Classical Variation, Giuoco Pianissimo, Albin Variation | |
| Oct 2, 2025 | Boulard | 0–1 | Nunn | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | King's Indian Defense: Orthodox Variation | |
| Oct 1, 2025 | Petran | 0–1 | Nunn | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | King's Indian Attack: Sicilian Variation | |
| Sep 30, 2025 | Nunn | 1–0 | Medancic | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | Lion Defense: Bayonet Attack | |
| Sep 29, 2025 | Nunn | ½–½ | Alquist | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Sep 27, 2025 | Nunn | ½–½ | Stueckler | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | Modern Defense: Standard Defense | |
| Sep 24, 2025 | Nunn | ½–½ | Ftacnik | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | Sicilian Defense: Najdorf Variation, Main Line | |
| Sep 24, 2025 | Welling | 0–1 | Nunn | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | King's Indian Attack: Sicilian Variation | |
| Sep 24, 2025 | Nunn | ½–½ | Bilobrk | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | Ruy Lopez: Closed, Breyer Defense, Quiet Variation | |
| Apr 13, 2025 | Nunn | 1–0 | Westerinen | ESTCC65 | French Defense: Advance Variation, Paulsen Attack | |
| Apr 11, 2025 | Nunn | 1–0 | Sandner | ESTCC65 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Apr 10, 2025 | Quinn | 0–1 | Nunn | ESTCC65 | King's Indian Defense: Normal Variation, Rare Defenses | |
| Apr 9, 2025 | Nunn | 1–0 | Vadlja | ESTCC65 | Philidor Defense | |
| Apr 7, 2025 | Beilfuss | ½–½ | Nunn | ESTCC65 | Indian Defense: Przepiorka Variation | |
| Apr 6, 2025 | Nunn | ½–½ | Janocha | ESTCC65 | Alekhine Defense: Modern Variation, Larsen Variation | |
| Apr 5, 2025 | Rooze | ½–½ | Nunn | ESTCC65 | Sicilian Defense: Moscow Variation | |
| Feb 25, 2025 | Nunn | ½–½ | Littlewood | World Senior Team 2025 S65 | Ruy Lopez: Closed, Anti-Marshall | |
| Feb 24, 2025 | Vaisser | 0–1 | Nunn | World Senior Team 2025 S65 | King's Indian Defense: Four Pawns Attack | |
| Feb 23, 2025 | Nunn | ½–½ | Birnboim | World Senior Team 2025 S65 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Feb 21, 2025 | Nunn | ½–½ | Knaak | World Senior Team 2025 S65 | Ruy Lopez: Closed, Martinez Variation | |
| Feb 20, 2025 | Garcia Palermo | ½–½ | Nunn | World Senior Team 2025 S65 | King's Indian Defense: Kramer Variation | |
| Feb 19, 2025 | Nunn | 1–0 | Uddenfeldt | World Senior Team 2025 S65 | Modern Defense: Standard Defense | |
| Feb 18, 2025 | Glienke | ½–½ | Nunn | World Senior Team 2025 S65 | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Feb 17, 2025 | Nunn | 1–0 | Bergstrom | World Senior Team 2025 S65 | Pirc Defense | |
| Nov 2, 2024 | Nunn | 1–0 | Karason | Round 9: Nunn, John D M - Karason, Askell O | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Nov 1, 2024 | Renman | ½–½ | Nunn | Round 8: Renman, Nils-Gustaf - Nunn, John D M | King's Indian Defense: Orthodox Variation, Classical System | |
| Oct 31, 2024 | Nunn | ½–½ | Petran | Round 7: Nunn, John D M - Petran, Peter | Modern Defense: Pseudo-Austrian Attack | |
| Oct 30, 2024 | Moen | ½–½ | Nunn | Round 6: Moen, Ole Christian - Nunn, John D M | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Oct 28, 2024 | Nunn | 1–0 | Frick | Round 4: Nunn, John D M - Frick, Christoph | Caro-Kann Defense: Advance Variation, Short Variation | |
| Oct 27, 2024 | Giffard | ½–½ | Nunn | Round 3: Giffard, Nicolas - Nunn, John D M | King's Indian Defense: Fianchetto Variation, Carlsbad Variation | |
| Oct 26, 2024 | Jensen | 0–1 | Nunn | Round 1: Jensen, Stein - Nunn, John D M | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Oct 23, 2024 | Nunn | ½–½ | Knaak | Round 5: Nunn, John D M - Knaak, Rainer | Ruy Lopez: Closed | |
| Oct 23, 2024 | Nunn | 1–0 | Burchardt | Round 2: Nunn, John D M - Burchardt, Brigitte | Sicilian Defense: Najdorf Variation | |
| Jul 11, 2024 | Nunn | 1–0 | Binham | 65-1 | Ruy Lopez: Schliemann Defense | |
| Jul 10, 2024 | Pigott | ½–½ | Nunn | 65-1 | King's Indian Defense: Orthodox Variation, Bayonet Attack | |
| Jul 9, 2024 | Nunn | ½–½ | Garcia Palermo | 65-1 | Lion Defense: Bayonet Attack | |
| Jul 7, 2024 | Gruenfeld | 0–1 | Nunn | 65-1 | Sicilian Defense: Najdorf Variation | |
| Jul 6, 2024 | Nunn | 1–0 | Sharif | 65-1 | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jul 5, 2024 | Ftacnik | ½–½ | Nunn | 65-1 | King's Indian Defense: Orthodox Variation, Bayonet Attack | |
| Jul 4, 2024 | Nunn | ½–½ | Maier | 65-1 | Pirc Defense | |
| Jul 3, 2024 | Vogt | ½–½ | Nunn | 65-1 | Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | |
| Jul 2, 2024 | Nunn | 1–0 | Thuesen | 65-1 | French Defense: MacCutcheon Variation, Dr. Olland Variation | |
| May 15, 2024 | Nunn | 1–0 | Antunac | European Senior Team Chess Championship 2024 - Section 65 + | Sicilian Defense: Kan Variation, Knight Variation | |
| May 13, 2024 | Nunn | ½–½ | Yrjola | European Senior Team Chess Championship 2024 - Section 65 + | Pirc Defense | |
| May 12, 2024 | Nunn | 1–0 | Haik | European Senior Team Chess Championship 2024 - Section 65 + | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| May 11, 2024 | Beliavsky | ½–½ | Nunn | European Senior Team Chess Championship 2024 - Section 65 + | King's Indian Defense: Semi-Averbakh System | |
| May 10, 2024 | Nunn | ½–½ | Ftacnik | European Senior Team Chess Championship 2024 - Section 65 + | Sicilian Defense: Najdorf Variation | |
| May 9, 2024 | Knaak | ½–½ | Nunn | European Senior Team Chess Championship 2024 - Section 65 + | King's Indian Defense: Averbakh Variation, Modern Defense | |
| May 8, 2024 | Nunn | 1–0 | Lehmann | European Senior Team Chess Championship 2024 - Section 65 + | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| May 7, 2024 | Fischdick | 0–1 | Nunn | European Senior Team Chess Championship 2024 - Section 65 + | King's Indian Defense: Sämisch Variation, Normal Defense | |
| Oct 27, 2023 | John D M Nunn | 1–0 | Ilgar Halafov | 65+ World Senior Championship | Caro-Kann Defense: Advance Variation, Short Variation | |
| Oct 26, 2023 | Soderberg | 0–1 | Nunn | 65+ World Senior Championship | Sicilian Defense: Moscow Variation | |
| Oct 25, 2023 | Nunn | 1–0 | Arias Formoso | 65+ World Senior Championship | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jul 20, 2023 | Nunn | 1–0 | Lehmann | European Senior Team Chess Championship 2023 65+ | Pirc Defense | |
| Jul 18, 2023 | Hardicsay | ½–½ | Nunn | European Senior Team Chess Championship 2023 65+ | Torre Attack: Fianchetto Defense, Euwe Variation | |
| Jul 17, 2023 | Nunn | 1–0 | Paehtz | European Senior Team Chess Championship 2023 65+ | Ruy Lopez: Closed, Anti-Marshall | |
| Jul 16, 2023 | Nunn | 1–0 | Mikkelsen | European Senior Team Chess Championship 2023 65+ | Caro-Kann Defense: Advance Variation, Short Variation | |
| Jul 15, 2023 | Renman | ½–½ | Nunn | European Senior Team Chess Championship 2023 65+ | King's Indian Defense: Orthodox Variation, Classical System | |
| Jul 14, 2023 | Nunn | ½–½ | Ftacnik | European Senior Team Chess Championship 2023 65+ | Sicilian Defense: Najdorf Variation | |
| Jul 13, 2023 | Birnboim | 0–1 | Nunn | European Senior Team Chess Championship 2023 65+ | London System | |
| Jul 12, 2023 | Nunn | 1–0 | Janocha | European Senior Team Chess Championship 2023 65+ | Ruy Lopez: Closed, Breyer Defense, Quiet Variation | |
| Jun 2, 2023 | Nunn | ½–½ | Ftacnik | escc2023_65 | Sicilian Defense: Najdorf Variation | |
| Jun 1, 2023 | Polster | ½–½ | Nunn | escc2023_65 | Sicilian Defense: Moscow Variation | |
| May 31, 2023 | Fernandez Garcia | ½–½ | Nunn | escc2023_65 | Sicilian Defense: Najdorf Variation | |
| May 30, 2023 | Nunn | 1–0 | Kierzek | escc2023_65 | Caro-Kann Defense: Advance Variation, Short Variation | |
| May 29, 2023 | Nunn | 1–0 | Giacomini | escc2023_65 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| May 28, 2023 | Chapman | ½–½ | Nunn | escc2023_65 | King's Indian Defense: Makogonov Variation | |
| May 27, 2023 | Nunn | 1–0 | Raynes | escc2023_65 | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| May 26, 2023 | Barlocco | 0–1 | Nunn | escc2023_65 | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Nov 17, 2022 | Biro | 0–1 | Nunn | 30th World Senior Chess Championship 2022 | Sicilian Defense: Alapin Variation, Barmen Defense, Modern Line | |
| Nov 17, 2022 | Nunn | 1–0 | Shnaider | 30th World Senior Chess Championship 2022 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Nov 15, 2022 | Nunn | 1–0 | Sursock | 30th World Senior Chess Championship 2022 | Sicilian Defense: O'Kelly Variation, Maróczy Bind | |
| Aug 21, 2022 | Footner | 0–1 | Nunn | Chessable British Chess Championships: Seniors 65+ | Sicilian Defense: Alapin Variation, Barmen Defense, Modern Line | |
| Aug 19, 2022 | Chandler | 0–1 | Nunn | Chessable British Chess Championships: Seniors 65+ | Sicilian Defense: Smith-Morra Gambit Accepted, Paulsen Formation | |
| Aug 18, 2022 | Nunn | 1–0 | Jackson | Chessable British Chess Championships: Seniors 65+ | Sicilian Defense: Kan Variation, Modern Variation | |
| Aug 17, 2022 | Hewson | 0–1 | Nunn | Chessable British Chess Championships: Seniors 65+ | King's Indian Attack: Symmetrical Defense | |
| Aug 16, 2022 | Nunn | 1–0 | Reuben | Chessable British Chess Championships: Seniors 65+ | Petrov's Defense: Modern Attack, Center Variation | |
| Aug 15, 2022 | Fryer | 0–1 | Nunn | Chessable British Chess Championships: Seniors 65+ | Sicilian Defense: Najdorf Variation, Freak Attack | |
| — | Nunn | 1–0 | Burnett | Chessable British Chess Championships: Seniors 65+ | French Defense: Winawer Variation, Advance Variation | |