| Mar 22, 2026 | Mammi | ½–½ | La Ricca | Round 5: Mammi, Ottavio - La Ricca, Silvio | English Opening: Anglo-Indian Defense | |
| Mar 22, 2026 | Zincani | 0–1 | Mammi | Round 4: Zincani, Riccardo - Mammi, Ottavio | Sicilian Defense: Moscow Variation | |
| Mar 21, 2026 | Borgo | 1–0 | Mammi | Round 3: Borgo, Giulio - Mammi, Ottavio | Caro-Kann Defense: Exchange Variation | |
| Mar 21, 2026 | Mammi | 1–0 | Ganci | Round 2: Mammi, Ottavio - Ganci, Elio | Sicilian Defense: Classical Variation | |
| Mar 20, 2026 | Capitelli | 0–1 | Mammi | Round 1: Capitelli, Paolo - Mammi, Ottavio | Sicilian Defense: O'Kelly Variation, Maróczy Bind | |
| Mar 1, 2026 | Albini | 0–1 | Mammi | Round 5: Albini, Federico - Mammi, Ottavio | ? | |
| Mar 1, 2026 | Mammi | 1–0 | Fulgentini | Round 4: Mammi, Ottavio - Fulgentini, Edoardo | English Opening: Agincourt Defense | |
| Feb 27, 2026 | Chiari | 0–1 | Mammi | Round 1: Chiari, Cosimo - Mammi, Ottavio | Queen's Gambit Declined | |
| Feb 27, 2026 | Nainys | 1–0 | Mammi | Round 3: Nainys, Zanas - Mammi, Ottavio | Grünfeld Defense: Exchange Variation, Modern Exchange Variation, Kramnik's Line | |
| Feb 27, 2026 | Mammi | 1–0 | De Filomeno | Round 2: Mammi, Ottavio - De Filomeno, Simone | English Opening: King's English Variation | |
| Oct 26, 2025 | Canova | 0–1 | Mammi | Round 6: Canova, Luca - Mammi, Ottavio | Zukertort Opening: Sicilian Invitation | |
| Oct 26, 2025 | Mammi | 0–1 | Maglioni | Round 5: Mammi, Ottavio - Maglioni, Leonardo | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Oct 25, 2025 | Mangili | 0–1 | Mammi | Round 4: Mangili, Gabriele - Mammi, Ottavio | Nimzo-Larsen Attack: Classical Variation | |
| Oct 25, 2025 | Mammi | ½–½ | Bergamaschi | Round 3: Mammi, Ottavio - Bergamaschi, Elia | Four Knights Game: Scotch Variation Accepted | |
| Oct 24, 2025 | Rostalnyi | 1–0 | Mammi | Round 2: Rostalnyi, Kyrylo - Mammi, Ottavio | Sicilian Defense: O'Kelly Variation, Maróczy Bind, Robatsch Line | |
| Oct 24, 2025 | Mammi | 1–0 | Baldi | Round 1: Mammi, Ottavio - Baldi, Matteo | English Opening: Anglo-Indian Defense | |
| Jul 5, 2025 | Dettori | ½–½ | Mammi | Round 9: Dettori, Jan - Mammi, Ottavio | Nimzo-Indian Defense: Kmoch Variation | |
| Jul 4, 2025 | Mammi | 1–0 | Baldi | Round 8: Mammi, Ottavio - Baldi, Matteo | French Defense: Schlechter Variation | |
| Jul 3, 2025 | Mammi | 1–0 | Cericola | Round 7: Mammi, Ottavio - Cericola, Michele Ettore | English Opening: Agincourt Defense | |
| Jun 30, 2025 | Mammi | 1–0 | Geraci | Round 4: Mammi, Ottavio - Geraci, Sergio | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Jun 28, 2025 | Bruni | 0–1 | Mammi | Round 1: Bruni, Leonardo - Mammi, Ottavio | Sicilian Defense: Modern Variations | |
| Jun 28, 2025 | Mammi | 1–0 | De Mojana Di Cologna | Round 2: Mammi, Ottavio - De Mojana Di Cologna, Arturo | English Opening: Anglo-Indian Defense | |
| Jun 28, 2025 | Groppi | 0–1 | Mammi | Round 3: Groppi, Andrea - Mammi, Ottavio | Grünfeld Defense: Exchange Variation | |
| Jun 28, 2025 | Folin | ½–½ | Mammi | Round 5: Folin, Giorgio - Mammi, Ottavio | Caro-Kann Defense: Karpov Variation, Modern Variation | |
| Jun 28, 2025 | La Barbera | 1–0 | Mammi | Round 6: La Barbera, Manfredi - Mammi, Ottavio | Sicilian Defense: Moscow Variation, Main Line | |
| Aug 23, 2024 | Mammi | 0–1 | Adrian | Round 9: Mammi, Ottavio - Adrian, Leopold | English Opening: Symmetrical Variation, Normal Variation | |
| Aug 22, 2024 | Krithigga K | 0–1 | Mammi | Round 8: Krithigga K - Mammi, Ottavio | English Opening: King's English Variation | |
| Aug 21, 2024 | Mammi | ½–½ | Fassio | Round 7: Mammi, Ottavio - Fassio, Luca Cesare | English Opening: Symmetrical Variation, Fianchetto Variation | |
| Aug 20, 2024 | Palozza | 1–0 | Mammi | Round 6: Palozza, Christian - Mammi, Ottavio | Catalan Opening | |
| Aug 20, 2024 | Mammi | 0–1 | Kaustuv | Round 5: Mammi, Ottavio - Kaustuv, Kundu | Sicilian Defense: Staunton-Cochrane Variation | |
| Aug 19, 2024 | Mammi | ½–½ | Mammi | Round 4: Mammi, Samuele - Mammi, Ottavio | Ruy Lopez: Open Berlin Defense, l'Hermet Variation | |
| Aug 18, 2024 | Mammi | 1–0 | Cichon | Round 3: Mammi, Ottavio - Cichon, Jakub | English Opening: King's English Variation | |
| Aug 18, 2024 | Casadio | 1–0 | Mammi | Round 2: Casadio, Niccolo` - Mammi, Ottavio | English Opening: King's English Variation, Two Knights Variation, Reversed Dragon | |
| Jul 28, 2024 | Mammi | 0–1 | Massazza | Round 9: Mammi, Ottavio - Massazza, Federico | English Opening: King's English Variation | |
| Jul 27, 2024 | Giordani | 0–1 | Mammi | Round 8: Giordani, Luca - Mammi, Ottavio | Bird Opening | |
| Jul 26, 2024 | Mammi | 0–1 | Bettalli | Round 7: Mammi, Ottavio - Bettalli, Francesco | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Jul 25, 2024 | Yao | 1–0 | Mammi | Round 6: Yao, Stefano - Mammi, Ottavio | English Opening: Symmetrical Variation | |
| Jul 24, 2024 | Collutiis | ½–½ | Mammi | Round 5: Collutiis, Duilio - Mammi, Ottavio | Trompowsky Attack: Classical Defense | |
| Jul 23, 2024 | Mammi | 1–0 | Ortega | Round 4: Mammi, Ottavio - Ortega, Lexy | English Opening: King's English Variation | |
| Jul 22, 2024 | Boraso | 1–0 | Mammi | Round 2: Boraso, Alessio - Mammi, Ottavio | Caro-Kann Defense: Apocalypse Attack | |
| Jul 21, 2024 | Mammi | * | Dilena | Round 1: Mammi, Ottavio - Dilena, Giuseppe | ? | |
| Jul 6, 2024 | Massazza | 0–1 | Mammi | Round 9: Massazza, Federico - Mammi, Ottavio | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Jul 5, 2024 | Mammi | 1–0 | Mazzotti | Round 8: Mammi, Ottavio - Mazzotti, Filippo | English Opening: King's English Variation | |
| Jul 4, 2024 | Montalto | 0–1 | Mammi | Round 7: Montalto, Davide - Mammi, Ottavio | Caro-Kann Defense: Panov Attack | |
| Jul 2, 2024 | Ferrante | 1–0 | Mammi | Round 5: Ferrante, Marco - Mammi, Ottavio | King's Indian Attack: Keres Variation | |
| Jul 1, 2024 | Mammi | 1–0 | Alia | Round 4: Mammi, Ottavio - Alia, Matteo Maria | English Opening: Symmetrical Variation, Botvinnik System Reversed, with e3 | |
| Jul 1, 2024 | Caputo | ½–½ | Mammi | Round 3: Caputo, Rossano - Mammi, Ottavio | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Jun 30, 2024 | Mammi | 1–0 | Pace | Round 2: Mammi, Ottavio - Pace, Gabriele | English Opening: King's English Variation, Taimanov Variation | |
| Jun 29, 2024 | Vezzani | 0–1 | Mammi | Round 1: Vezzani, Leonardo - Mammi, Ottavio | Caro-Kann Defense: Exchange Variation | |
| Apr 1, 2024 | Mammi | * | Bergamaschi | Round 6: Mammi, Ottavio - Bergamaschi, Elia | English Opening: King's English Variation | |
| Apr 1, 2024 | Ernst | 1–0 | Mammi | Round 5: Ernst, Robert - Mammi, Ottavio | Caro-Kann Defense: Endgame Offer | |
| Mar 31, 2024 | Mammi | 1–0 | Laneve | Round 4: Mammi, Ottavio - Laneve, Giulio | English Opening: King's English Variation | |
| Mar 30, 2024 | Pasini | 0–1 | Mammi | Round 3: Pasini, Nicolo - Mammi, Ottavio | Caro-Kann Defense: Exchange Variation | |
| Mar 30, 2024 | Mammi | 0–1 | Simonetto | Round 2: Mammi, Ottavio - Simonetto, Andrea | Caro-Kann Defense: Advance Variation, Van der Wiel Attack | |
| Mar 29, 2024 | D'Amore | 0–1 | Mammi | Round 1: D'Amore, Carlo - Mammi, Ottavio | King's Indian Attack: Keres Variation | |
| Dec 22, 2024 | Folin | 1–0 | Mammi | Round 5: Folin, Giorgio - Mammi, Ottavio | Sicilian Defense: Closed | |
| Dec 21, 2024 | Ripa` | 1–0 | Mammi | Round 3: Ripa`, Daniele - Mammi, Ottavio | Sicilian Defense: Moscow Variation | |
| Dec 20, 2024 | Di Giacinto | 1–0 | Mammi | Round 1: Di Giacinto, Gaudio - Mammi, Ottavio | Nimzo-Larsen Attack: Classical Variation | |
| Jul 9, 2023 | Folin Giorgio | 1–0 | Mammi Ottavio | Round 9: Folin Giorgio - Mammi Ottavio | Caro-Kann Defense: Exchange Variation | |
| Jul 8, 2023 | Brunetti Alessandro | 0–1 | Mammi Ottavio | Round 8: Brunetti Alessandro - Mammi Ottavio | Sicilian Defense: Najdorf Variation | |
| Jul 7, 2023 | Mammi Ottavio | ½–½ | Geraci Sergio | Round 7: Mammi Ottavio - Geraci Sergio | English Opening: Symmetrical Variation, Fianchetto Variation | |
| Jul 6, 2023 | Togni Alessandro | 0–1 | Mammi Ottavio | Round 6: Togni Alessandro - Mammi Ottavio | Scandinavian Defense: Main Line | |
| Jul 6, 2023 | Mammi Ottavio | 0–1 | Rossi Gabriele Valerio | Round 5: Mammi Ottavio - Rossi Gabriele Valerio | English Opening: King's English Variation, Troger Defense | |
| Jul 5, 2023 | Mammi Ottavio | 1–0 | Baldi Matteo | Round 4: Mammi Ottavio - Baldi Matteo | English Opening: Mikenas-Carls, Sicilian | |
| Jul 4, 2023 | Rubini Alessandro | ½–½ | Mammi Ottavio | Round 3: Rubini Alessandro - Mammi Ottavio | Caro-Kann Defense: Classical Variation, Spassky Variation | |
| Jul 3, 2023 | Mammi Ottavio | 1–0 | Pazzaglini Tommaso | Round 2: Mammi Ottavio - Pazzaglini Tommaso | English Opening: King's English Variation, Taimanov Variation | |
| Jul 2, 2023 | Cinquemani Christian | 0–1 | Mammi Ottavio | Round 1: Cinquemani Christian - Mammi Ottavio | Caro-Kann Defense: Classical Variation | |
