| Mar 7, 2026 | Gallagher | ½–½ | Leslie | Round 144: Gallagher, Daniel GH - Leslie, Alex | Trompowsky Attack | |
| Feb 22, 2026 | Cont | 0–1 | Leslie | Round 9: Cont, Arya - Leslie, Alex | Zukertort Opening | |
| Feb 22, 2026 | Leslie | 1–0 | Benzaira | Round 8: Leslie, Alex - Benzaira, Sammy | King's Indian Defense: Fianchetto Variation | |
| Feb 22, 2026 | Berger | ½–½ | Leslie | Round 7: Berger, Justin - Leslie, Alex | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Feb 22, 2026 | Leslie | 1–0 | Yoon | Round 6: Leslie, Alex - Yoon, Jacob D | Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line | |
| Feb 21, 2026 | Gallagher | 1–0 | Leslie | Round 4: Gallagher, Daniel GH - Leslie, Alex | Caro-Kann Defense: Endgame Variation | |
| Feb 21, 2026 | Leslie | 1–0 | Weersing | Round 5: Leslie, Alex - Weersing, Abigail Riis | Queen's Gambit Declined: Harrwitz Attack, Main Line | |
| Feb 21, 2026 | Leslie | 0–1 | Tran | Round 3: Leslie, Alex - Tran, David | Neo-Grünfeld Defense: Delayed Exchange Variation | |
| Feb 21, 2026 | Pelling | 1–0 | Leslie | Round 2: Pelling, Kyle - Leslie, Alex | Caro-Kann Defense: Endgame Variation | |
| Feb 21, 2026 | Leslie | 0–1 | Hng | Round 1: Leslie, Alex - Hng, Mei-En Emmanuelle | Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line | |
| Feb 23, 2025 | Leslie | 1–0 | Grozea | British Universities Chess Association Championship 2025 | Semi-Slav Defense: Main Line | |
| Feb 23, 2025 | Ye | ½–½ | Leslie | British Universities Chess Association Championship 2025 | Caro-Kann Defense: Two Knights Attack | |
| Feb 22, 2025 | Leslie | 1–0 | Turner | British Universities Chess Association Championship 2025 | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Feb 22, 2025 | Leslie | ½–½ | Benzaira | British Universities Chess Association Championship 2025 | Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | |
| Feb 22, 2025 | Leslie | 1–0 | Gurner | British Universities Chess Association Blitz 2025 | King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | |
| Feb 22, 2025 | Leslie | 1–0 | Lee | British Universities Chess Association Blitz 2025 | English Defense | |
| Feb 22, 2025 | Leslie | * | Brown | British Universities Chess Association Blitz 2025 | Queen's Gambit Accepted: Central Variation, Alekhine System | |
| Feb 22, 2025 | Carpenter-Friend | ½–½ | Leslie | British Universities Chess Association Championship 2025 | Queen's Indian Defense: Classical Variation, Traditional Variation, Main Line | |
| Feb 22, 2025 | Lee | 1–0 | Leslie | British Universities Chess Association Championship 2025 | Queen's Indian Defense: Classical Variation, Traditional Variation, Main Line | |
| Feb 22, 2025 | Tompkins-Coll | ½–½ | Leslie | British Universities Chess Association Championship 2025 | Caro-Kann Defense: Accelerated Panov Attack, Modern Variation | |
| Feb 22, 2025 | Goodlad | 0–1 | Leslie | British Universities Chess Association Blitz 2025 | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Feb 22, 2025 | Saunders | 0–1 | Leslie | British Universities Chess Association Blitz 2025 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Feb 22, 2025 | Clarke | 0–1 | Leslie | British Universities Chess Association Blitz 2025 | Rapport-Jobava System | |
| Jun 28, 2024 | Hill | 0–1 | Leslie | Round 5: Hill, Charlie - Leslie, Alex | Indian Defense | |
| Jun 28, 2024 | Babu | ½–½ | Leslie | Round 4: Babu, Rahul - Leslie, Alex | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Jun 27, 2024 | Leslie | ½–½ | Sachdeva | Round 3: Leslie, Alex - Sachdeva, Ronit | Slav Defense: Quiet Variation, Schallopp Defense | |
| Jun 27, 2024 | Leslie | 1–0 | Zhao | Round 2: Leslie, Alex - Zhao, Haolin | Bogo-Indian Defense: Grünfeld Variation | |
| Jul 21, 2023 | Leslie | 1–0 | Alcala Gonzalez | Open Internacional Sant Marti 2023 | Semi-Slav Defense: Stoltz Variation | |
| Jul 16, 2023 | Leslie | 0–1 | Asis Gargatagli | Open Internacional Sant Marti 2023 | King's Indian Defense: Fianchetto Variation, Classical Variation | |
| Jul 15, 2023 | Leslie | ½–½ | Cordoba Roa | Open internacional Sant Marti 2023 | Queen's Gambit Declined: Three Knights, Vienna Variation | |
| Aug 21, 2022 | Midhun | 1–0 | Leslie | Chessable British Chess Championships: Major Open | English Opening: Anglo-Indian Defense, Queen's Indian Formation | |
| Aug 20, 2022 | Leslie | 1–0 | Starley | Chessable British Chess Championships: Major Open | Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line | |
| Aug 19, 2022 | Leslie | ½–½ | Rathbone-Jones | Chessable British Chess Championships: Week 2 Open | Benoni Defense: Hromádka System | |
| Aug 19, 2022 | Larkin | ½–½ | Leslie | Chessable British Chess Championships: Major Open | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Aug 18, 2022 | Leslie | ½–½ | Saunders | Chessable British Chess Championships: Major Open | Semi-Slav Defense: Stoltz Variation | |
| Aug 17, 2022 | James | ½–½ | Leslie | Chessable British Chess Championships: Major Open | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Aug 16, 2022 | Leslie | 1–0 | Garnett | Chessable British Chess Championships: Major Open | Queen's Gambit Accepted: Central Variation, McDonnell Defense | |
| Aug 15, 2022 | Phillips | 0–1 | Leslie | Chessable British Chess Championships: Major Open | Nimzo-Larsen Attack: Indian Variation | |
| Aug 14, 2022 | Leslie | 1–0 | Collinson | Chessable British Chess Championships: Week 2 Open | Benoni Defense: Fianchetto Variation | |
| Aug 14, 2022 | Leslie | ½–½ | Johnson | Chessable British Chess Championships: Major Open | Tarrasch Defense: Classical Variation, Endgame Variation | |
| Aug 13, 2022 | Pert | 0–1 | Leslie | Chessable British Chess Championships: Major Open | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Oct 10, 2021 | Leslie | 0–1 | Moreby | 2021 UK Chess Challenge Terafinal Under 18 | Slav Indian | |
| Oct 10, 2021 | Leslie | 1–0 | Dicen | 2021 UK Chess Challenge Terafinal Under 18 | Dutch Defense: Stonewall Variation, Modern Variation | |
| Oct 10, 2021 | Leslie | ½–½ | Badacsonyi | 2021 UK Chess Challenge Terafinal Under 18 | English Defense | |
| Oct 10, 2021 | Stoica | ½–½ | Leslie | 2021 UK Chess Challenge Terafinal Under 18 | Zukertort Opening: Nimzo-Larsen Variation | |
| Oct 10, 2021 | Han | 1–0 | Leslie | 2021 UK Chess Challenge Terafinal Under 18 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Old Line | |
| Oct 9, 2021 | Leslie | 1–0 | Roy | 2021 UK Chess Challenge Terafinal Under 18 | Queen's Gambit Accepted: Central Variation, McDonnell Defense | |
| Oct 9, 2021 | Leslie | 1–0 | Jackson | 2021 UK Chess Challenge Terafinal Under 18 | Queen's Gambit Declined: Harrwitz Attack, Two Knights Defense, Blockade Line | |
| Oct 9, 2021 | Weersing | 0–1 | Leslie | 2021 UK Chess Challenge Terafinal Under 18 | Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation | |
| Oct 9, 2021 | Chopra | ½–½ | Leslie | 2021 UK Chess Challenge Terafinal Under 18 | Nimzo-Indian Defense: Classical Variation | |
| Oct 9, 2021 | Balaji | 1–0 | Leslie | 2021 UK Chess Challenge Terafinal Under 18 | Nimzo-Indian Defense: Sämisch Variation | |
| — | Leslie | 0–1 | Dignam | Chessable British Chess Championships: Week 2 Open | King's Indian Defense: Fianchetto Variation, Kavalek Defense | |
| — | Leslie | 1–0 | Jackson | British Universities Chess Association Blitz 2025 | Queen's Gambit Declined: Barmen Variation | |
| — | Leslie | 0–1 | Balaji | British Universities Chess Association Blitz 2025 | Queen's Pawn Game | |
| — | Stoyanov | 0–1 | Leslie | 2021 UK Chess Challenge Terafinal Under 18 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line | |
| — | Kumar | 0–1 | Leslie | Chessable British Chess Championships: Week 2 Open | Sicilian Defense: Moscow Variation | |
| — | Pert | ½–½ | Leslie | Chessable British Chess Championships: Week 2 Open | Sicilian Defense: Dragon Variation, Levenfish Variation | |
| — | Li | 1–0 | Leslie | British Universities Chess Association Blitz 2025 | Queen's Indian Defense: Petrosian Variation, Farago Defense | |
| — | Yoon | ½–½ | Leslie | British Universities Chess Association Championship 2025 | Indian Defense: Devin Gambit | |
| — | Nyberg | 1–0 | Leslie | British Universities Chess Association Championship 2025 | Queen's Indian Defense: Kasparov Variation | |