| Jun 26, 2026 | Pavleski | 0–1 | Maglioni | Round 11: Pavleski, Nikola - Maglioni, Leonardo | Sicilian Defense: Delayed Alapin Variation | |
| Jun 25, 2026 | Kurbanbaev | 1–0 | Maglioni | Round 10: Kurbanbaev, Zalkar - Maglioni, Leonardo | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jun 24, 2026 | Maglioni | 0–1 | Hettiarachchi | Round 9: Maglioni, Leonardo - Hettiarachchi, Jeewantha Aloka | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 23, 2026 | Lapenna | 0–1 | Maglioni | World Youth Chess Championship 2026 U18 Open | Sicilian Defense: Modern Variations | |
| Jun 22, 2026 | Maglioni | 0–1 | Petukhov | Round 7: Maglioni, Leonardo - Petukhov, Alan | English Opening: Symmetrical Variation | |
| Jun 20, 2026 | Sundac | ½–½ | Maglioni | Round 6: Sundac, Ivano - Maglioni, Leonardo | Queen's Pawn Game: London System | |
| Jun 19, 2026 | Maglioni | 1–0 | Blagoev | Round 5: Maglioni, Leonardo - Blagoev, Denislav | Hungarian Opening | |
| Jun 18, 2026 | Blomer | ½–½ | Maglioni | Round 4: Blomer, John - Maglioni, Leonardo | Zukertort Opening: Nimzo-Larsen Variation | |
| Jun 17, 2026 | Maglioni | 0–1 | Agasarov | Round 3: Maglioni, Leonardo - Agasarov, Benik | English Opening: King's English Variation, Kramnik-Shirov Counterattack | |
| Jun 16, 2026 | Pingin | ½–½ | Maglioni | Round 2: Pingin, Artem - Maglioni, Leonardo | Queen's Gambit Accepted: Janowski-Larsen Variation | |
| Jun 15, 2026 | Maglioni | ½–½ | Hagner | Round 1: Maglioni, Leonardo - Hagner, Bennet | English Opening: Agincourt Defense | |
| Apr 30, 2026 | Maglioni | 1–0 | Boraso | Finals: Maglioni, Leonardo - Boraso, Alessio | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 29, 2026 | Maglioni | ½–½ | Centamore | Semifinals: Maglioni, Leonardo - Centamore, Alberto | Queen's Gambit Declined: Charousek Variation | |
| Apr 27, 2026 | Aghayev | 1–0 | Maglioni | Round 6: Aghayev, Miragha - Maglioni, Leonardo | Caro-Kann Defense: Main Line | |
| Feb 14, 2026 | Chasin | 1–0 | Maglioni | Round 1: Chasin, Nico - Maglioni, Leonardo | Neo-Grünfeld Defense: Delayed Exchange Variation | |
| Jan 6, 2026 | Vancini | ½–½ | Maglioni | Round 7: Vancini, Edoardo - Maglioni, Leonardo | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Jan 6, 2026 | Maglioni | ½–½ | Bodini | Round 6: Maglioni, Leonardo - Bodini, Ludovico | Bogo-Indian Defense: Grünfeld Variation | |
| Jan 5, 2026 | Vezzosi | 1–0 | Maglioni | Round 5: Vezzosi, Paolo - Maglioni, Leonardo | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Jan 5, 2026 | Maglioni | 1–0 | Romagno | Round 4: Maglioni, Leonardo - Romagno, Pasquale | English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit | |
| Jan 4, 2026 | Maglioni | 1–0 | Tramalloni | Round 3: Maglioni, Leonardo - Tramalloni, Luca | Zukertort Opening: Sicilian Invitation | |
| Jan 4, 2026 | Stirpe | ½–½ | Maglioni | Round 2: Stirpe, Claudio - Maglioni, Leonardo | English Opening: Symmetrical Variation | |
| Jan 3, 2026 | Maglioni | * | Budai | Round 9: Maglioni, Leonardo - Budai, Federico | ? | |
| Jan 2, 2026 | Maglioni | * | Tona | Round 8: Maglioni, Leonardo - Tona, Leonardo | ? | |
| Jan 1, 2026 | von Schlippe | * | Maglioni | Round 7: von Schlippe, Nikolai - Maglioni, Leonardo | ? | |
| Dec 31, 2025 | Maglioni | * | Mocic | Round 6: Maglioni, Leonardo - Mocic, Ivano | ? | |
| Dec 30, 2025 | Beliman | * | Maglioni | Round 5: Beliman, Alexandro - Maglioni, Leonardo | ? | |
| Dec 29, 2025 | Maglioni | * | Kowalczyk | Round 4: Maglioni, Leonardo - Kowalczyk, Rafal | ? | |
| Dec 29, 2025 | Van Amerongen | * | Maglioni | Round 3: Van Amerongen, Arjen - Maglioni, Leonardo | ? | |
| Dec 28, 2025 | Maglioni | 0–1 | Bailet | Round 2: Maglioni, Leonardo - Bailet, Pierre | English Opening: Four Knights System, Nimzowitsch Variation | |
| Oct 26, 2025 | Hercegovac | 1–0 | Maglioni | Round 6: Hercegovac, Neven - Maglioni, Leonardo | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Oct 26, 2025 | Mammi | 0–1 | Maglioni | Round 5: Mammi, Ottavio - Maglioni, Leonardo | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Oct 25, 2025 | Maglioni | 1–0 | Pin | Round 4: Maglioni, Leonardo - Pin, Orlando | English Opening: Four Knights System, Nimzowitsch Variation | |
| Oct 25, 2025 | Di Bartolomeo | ½–½ | Maglioni | Round 3: Di Bartolomeo, Adrian Mikail - Maglioni, Leonardo | Grünfeld Defense: Exchange Variation, Modern Exchange Variation | |
| Oct 24, 2025 | Canova | 0–1 | Maglioni | Round 1: Canova, Luca - Maglioni, Leonardo | Caro-Kann Defense: Exchange Variation | |
| Oct 20, 2025 | Maglioni | 0–1 | Nikolovski | Round 2: Maglioni, Leonardo - Nikolovski, Nikola | Dutch Defense: Queen's Knight Variation | |
| Sep 28, 2025 | Maglioni | ½–½ | Colonetti | Round 5: Maglioni, Leonardo - Colonetti, Fabio | English Opening: Caro-Kann Defensive System | |
| Sep 28, 2025 | Vancini | ½–½ | Maglioni | Round 4: Vancini, Edoardo - Maglioni, Leonardo | Trompowsky Attack | |
| Sep 27, 2025 | Maglioni | 0–1 | Valsecchi | Round 3: Maglioni, Leonardo - Valsecchi, Alessio | English Opening: Adorjan Defense | |
| Sep 27, 2025 | Massironi | 0–1 | Maglioni | Round 2: Massironi, Marco - Maglioni, Leonardo | Caro-Kann Defense: Tartakower Variation | |
| Jul 3, 2025 | Candian | 1–0 | Maglioni | Round 7: Candian, Lorenzo - Maglioni, Leonardo | Grünfeld Defense: Three Knights Variation | |
| Jul 2, 2025 | Maglioni | 0–1 | Zoncu | Round 6: Maglioni, Leonardo - Zoncu, Roberto Alessio | English Opening: King's English Variation, Four Knights Variation | |
| Jul 1, 2025 | Maglioni | 1–0 | Gola | Round 5: Maglioni, Leonardo - Gola, Giorgio | English Opening: Mikenas-Carls Variation | |
| Apr 17, 2025 | Schlosser | 1–0 | Maglioni | Round 1: Schlosser, Philipp - Maglioni, Leonardo | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 6, 2025 | Maglioni | 0–1 | Massazza | Round 6: Maglioni, Leonardo - Massazza, Federico | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Jan 6, 2025 | Di Liberto | ½–½ | Maglioni | Round 7: Di Liberto, Michele - Maglioni, Leonardo | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Jan 5, 2025 | Maglioni | ½–½ | Pieri | Round 4: Maglioni, Leonardo - Pieri, Pierre-Louis | Indian Defense: Anti-Nimzo-Indian | |
| Jan 5, 2025 | Bergamaschi | 0–1 | Maglioni | Round 5: Bergamaschi, Elia - Maglioni, Leonardo | Neo-Grünfeld Defense: with g3 | |
| Jan 4, 2025 | Maglioni | ½–½ | Dionigi | Round 2: Maglioni, Leonardo - Dionigi, Riccardo | King's Indian Attack: Yugoslav Variation | |
| Jan 4, 2025 | Rotondaro | 0–1 | Maglioni | Round 3: Rotondaro, Alberto - Maglioni, Leonardo | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 3, 2025 | Skrbec | 1–0 | Maglioni | Round 9: Skrbec, Leon - Maglioni, Leonardo | Torre Attack: Fianchetto Defense | |
| Jan 2, 2025 | Maglioni | 0–1 | Kalosha | Round 8: Maglioni, Leonardo - Kalosha, Zhiulien Oleksii | Queen's Gambit Declined | |
| Jan 1, 2025 | Hercegovac | 0–1 | Maglioni | Round 7: Hercegovac, Neven - Maglioni, Leonardo | French Defense: Advance Variation, Paulsen Attack | |
| Aug 23, 2024 | Maglioni | 0–1 | Casagrande | Round 9: Maglioni, Leonardo - Casagrande, Federico | King's Indian Attack: Sicilian Variation | |
| Aug 22, 2024 | Sunyuktha C M N | ½–½ | Maglioni | Round 8: Sunyuktha C M N - Maglioni, Leonardo | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Aug 21, 2024 | Iskos | 0–1 | Maglioni | Round 7: Iskos, Lukas - Maglioni, Leonardo | Queen's Pawn Game: London System | |
| Aug 20, 2024 | Maglioni | 0–1 | Fetiveau | Round 6: Maglioni, Leonardo - Fetiveau, Arthur | King's Indian Attack | |
| Aug 20, 2024 | Meskenas | 1–0 | Maglioni | Round 5: Meskenas, Paulius - Maglioni, Leonardo | French Defense: Advance Variation, Euwe Variation | |
| Aug 19, 2024 | Maglioni | 1–0 | Bonade | Round 4: Maglioni, Leonardo - Bonade, Massimo | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Aug 18, 2024 | Saketh | ½–½ | Maglioni | Round 3: Saketh, Pedagandham - Maglioni, Leonardo | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Aug 18, 2024 | Maglioni | 1–0 | Lucchi | Round 2: Maglioni, Leonardo - Lucchi, Alessandro | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Aug 17, 2024 | Cichon | 1–0 | Maglioni | Round 1: Cichon, Bartlomiej - Maglioni, Leonardo | Sicilian Defense: Boleslavsky Variation | |
| Aug 10, 2024 | Bettalli | 1–0 | Maglioni | Round 2: Bettalli, Francesco - Maglioni, Leonardo | Sicilian Defense: Richter-Rauzer Variation | |
| Jul 26, 2024 | Pegno | 1–0 | Maglioni | Round 7: Pegno, Mattia - Maglioni, Leonardo | Semi-Slav Defense: Anti-Moscow Gambit | |
| Jul 23, 2024 | Maglioni | 0–1 | Contin | Round 4: Maglioni, Leonardo - Contin, Daniel | French Defense: Paulsen Variation | |
| Jul 21, 2024 | Paltrinieri | 1–0 | Maglioni | Round 1: Paltrinieri, Nicholas - Maglioni, Leonardo | Zukertort Opening: Double Fianchetto Attack | |
| Jul 6, 2024 | Fava | ½–½ | Maglioni | Round 9: Fava, Lorenzo - Maglioni, Leonardo | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Jul 5, 2024 | Maglioni | 1–0 | Perrone | Round 8: Maglioni, Leonardo - Perrone, Michele | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Jul 4, 2024 | Carrideo | 0–1 | Maglioni | Round 7: Carrideo, Simone - Maglioni, Leonardo | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Jul 3, 2024 | Maglioni | ½–½ | Massazza | Round 6: Maglioni, Leonardo - Massazza, Federico | Sicilian Defense: Venice Attack | |
| Jul 2, 2024 | Vommaro | 0–1 | Maglioni | Round 5: Vommaro, Stanislao - Maglioni, Leonardo | Sicilian Defense: Sozin Attack, Leonhardt Variation | |
| Jul 1, 2024 | Maglioni | 1–0 | Unterberger | Round 4: Maglioni, Leonardo - Unterberger, Celina | Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | |
| Jul 1, 2024 | Maglioni | * | Folin | Round 4: Maglioni, Leonardo - Folin, Giorgio | Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | |
| May 25, 2024 | Mola | 1–0 | Maglioni | Round 3: Mola, Pietro - Maglioni, Leonardo | Trompowsky Attack: Classical Defense, Big Center Variation | |
| May 25, 2024 | De Filomeno | 1–0 | Maglioni | Round 1: De Filomeno, Simone - Maglioni, Leonardo | Indian Defense: Anti-Nimzo-Indian | |
| Mar 30, 2024 | Maglioni | 1–0 | Meyner | Grenke Open | Queen's Pawn Game: London System, with e6 | |
| Dec 31, 2024 | Maglioni | ½–½ | Domalchuk-Jonasson | Round 6: Maglioni, Leonardo - Domalchuk-Jonasson, Aleksandr | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Dec 30, 2024 | Maglioni | * | Perossa | Round 5: Maglioni, Leonardo - Perossa, Nicolas | ? | |
| Dec 29, 2024 | Candian | * | Maglioni | Round 3: Candian, Lorenzo - Maglioni, Leonardo | ? | |
| Dec 29, 2024 | Mazzini | 0–1 | Maglioni | Round 4: Mazzini, Mauro - Maglioni, Leonardo | Sicilian Defense: Boleslavsky Variation | |
| Dec 28, 2024 | Maglioni | * | Cocchi | Round 2: Maglioni, Leonardo - Cocchi, Andrea | ? | |
| Dec 27, 2024 | Tejaswini G | * | Maglioni | Round 1: Tejaswini G - Maglioni, Leonardo | ? | |
| Nov 18, 2023 | Maglioni | 0–1 | Makridis | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Nov 16, 2023 | Maglioni | 0–1 | Chyndygyr | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Sicilian Defense: Kalashnikov Variation | |
| Nov 15, 2023 | Heinrich | ½–½ | Maglioni | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Nov 14, 2023 | Maglioni | ½–½ | Smeets | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |