| Jul 20, 2025 | Marsden | ½–½ | Salmons | ECF English Open Championship 2025 | Sicilian Defense: Closed, Traditional | |
| Jul 20, 2025 | Marsden | ½–½ | Verma | ECF English Open Championship 2025 | French Defense: Exchange Variation | |
| Jul 19, 2025 | Rastogi | 0–1 | Marsden | ECF English Open Championship 2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jul 19, 2025 | Marsden | 1–0 | Hertog | ECF English Open Championship 2025 | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Jul 18, 2025 | Shivakumar | 1–0 | Marsden | ECF English Open Championship 2025 | Nimzo-Indian Defense: Classical Variation, Milner-Barry Variation | |
| Jul 18, 2025 | Marsden | ½–½ | Lebedev | ECF English Open Championship 2025 | French Defense: Schlechter Variation | |
| Jul 18, 2025 | Merry | 1–0 | Marsden | ECF English Open Championship 2025 | Catalan Opening | |
| Mar 23, 2025 | Noennig | ½–½ | Marsden | Round 5: Noennig, Jakob - Marsden, Samuel | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Mar 22, 2025 | Marsden | ½–½ | Terlouw | Round 4: Marsden, Samuel - Terlouw, Wouter | Sicilian Defense: Closed, Traditional | |
| Mar 22, 2025 | Magi | 0–1 | Marsden | Round 3: Magi, Ramon - Marsden, Samuel | Rapport-Jobava System | |
| Mar 21, 2025 | Marsden | 1–0 | Johannsson | Round 1: Marsden, Samuel - Johannsson, Markus Orri | Sicilian Defense: Closed, Traditional | |
| Mar 21, 2025 | Marsden | 1–0 | Barnes | Round 2: Marsden, Samuel - Barnes, Oliver | French Defense: Schlechter Variation | |
| Sep 22, 2024 | Marsden | 1–0 | Pack | 2024 UK Chess Challenge Terafinal Challengers U14 | Sicilian Defense: Closed | |
| Sep 22, 2024 | Marsden | 0–1 | Mittal | 2024 UK Chess Challenge Terafinal Challengers U14 | French Defense: Schlechter Variation | |
| Sep 22, 2024 | Chapman | 1–0 | Marsden | 2024 UK Chess Challenge Terafinal Challengers U14 | Sicilian Defense: Grand Prix Attack | |
| Sep 22, 2024 | Mehta | 1–0 | Marsden | 2024 UK Chess Challenge Terafinal Challengers U14 | Indian Defense | |
| Sep 21, 2024 | Marsden | 0–1 | Ganti | 2024 UK Chess Challenge Terafinal Challengers U14 | Sicilian Defense: Closed, Traditional | |
| Sep 21, 2024 | Patel | 1–0 | Marsden | 2024 UK Chess Challenge Terafinal Challengers U14 | Grünfeld Defense: Exchange Variation, Modern Exchange Variation, Kramnik's Line | |
| Sep 21, 2024 | Marsden | ½–½ | Marsden | 2024 UK Chess Challenge Terafinal Challengers U14 | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
