| Jun 28, 2026 | Gardiner | 1–0 | Surtees | Round 5: Gardiner, Harry - Surtees, Mike J | Modern Defense: Pseudo-Austrian Attack | |
| Jun 28, 2026 | Cheng | ½–½ | Gardiner | Round 4: Cheng, Louis - Gardiner, Harry | Italian Game: Classical Variation, Giuoco Pianissimo, with a5 | |
| Jun 27, 2026 | Gardiner | 1–0 | Norris | Round 3: Gardiner, Harry - Norris, Ethan | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| Jun 27, 2026 | Sandbrink | 0–1 | Gardiner | Round 2: Sandbrink, Kai - Gardiner, Harry | Queen's Gambit Declined: Exchange Variation, Reshevsky Variation | |
| Mar 29, 2026 | Barwick | ½–½ | Gardiner | Round 5: Barwick, Carmel - Gardiner, Harry | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Mar 29, 2026 | Gardiner | 1–0 | Lambton | Round 4: Gardiner, Harry - Lambton, David | Caro-Kann Defense: Endgame Variation | |
| Mar 28, 2026 | Riley | 0–1 | Gardiner | Round 3: Riley, Chris - Gardiner, Harry | Ruy Lopez: Morphy Defense, Schliemann Defense Deferred | |
| Mar 28, 2026 | Gardiner | 0–1 | Ratcliffe | Round 2: Gardiner, Harry - Ratcliffe, James | Sicilian Defense: Godiva Variation | |
| Mar 27, 2026 | Boswell | 1–0 | Gardiner | Round 1: Boswell, Jacob Connor - Gardiner, Harry | Queen's Gambit Declined: Exchange Variation, Sämisch Variation | |
| Feb 15, 2026 | Elgar | 1–0 | Gardiner | Round 4: Elgar, Tim - Gardiner, Harry | Catalan Opening: Open Defense, Classical Line | |
| Feb 14, 2026 | Gomez | 1–0 | Gardiner | Round 2: Gomez, Daniel - Gardiner, Harry | Ruy Lopez: Morphy Defense, Norwegian Variation | |
| Feb 13, 2026 | Gardiner | 1–0 | Ciuravin | Round 1: Gardiner, Harry - Ciuravin, Andrei | Owen Defense | |
| Oct 26, 2025 | Armstrong | 1–0 | Gardiner | Round 5: Armstrong, Malcolm J - Gardiner, Harry | Queen's Pawn Game: Symmetrical Variation | |
| Oct 26, 2025 | Gardiner | ½–½ | Vaddhireddy | Round 4: Gardiner, Harry - Vaddhireddy, Sai | Slav Defense: Exchange Variation | |
| Oct 25, 2025 | Wise | 1–0 | Gardiner | Round 3: Wise, David - Gardiner, Harry | Queen's Gambit Declined | |
| Oct 25, 2025 | Gomez | 1–0 | Gardiner | Round 2: Gomez, Daniel - Gardiner, Harry | Ruy Lopez: Morphy Defense, Schliemann Defense Deferred | |
| Oct 24, 2025 | Gardiner | ½–½ | Mitchell | Round 1: Gardiner, Harry - Mitchell, Martin | Pirc Defense: 150 Attack | |
| — | Gardiner | 0–1 | Lees | Round 1: Gardiner, Harry - Lees, Nicholas | Queen's Gambit Declined: Orthodox Defense, Pillsbury Variation | |
| — | Gardiner | ½–½ | Layhe | Round 3: Gardiner, Harry - Layhe, Simon | Slav Defense: Exchange Variation | |
| — | Ofeni | ½–½ | Gardiner | Round 2: Ofeni, Joel - Gardiner, Harry | Slav Defense: Exchange Variation | |
| — | Ranasinghe | 0–1 | Gardiner | Round 4: Ranasinghe, R A Chaniru Chanudika - Gardiner, Harry | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| — | Flavell | 1–0 | Gardiner | Round 5: Flavell, Archie - Gardiner, Harry | Sicilian Defense: French Variation, Normal | |
