| Jun 26, 2026 | Petcu | 1–0 | Ganci | Round 11: Petcu, Gabriel - Ganci, Alberto | Sicilian Defense: Richter-Rauzer Variation, Vitolins Variation | |
| Jun 25, 2026 | Induwara | ½–½ | Petcu | Round 10: Induwara, T H D Thisarindu - Petcu, Gabriel | Sicilian Defense: Moscow Variation | |
| Jun 24, 2026 | Benedikt | 1–0 | Petcu | Round 9: Benedikt, Noah - Petcu, Gabriel | Sicilian Defense: Chekhover Variation | |
| Jun 23, 2026 | Petcu | 1–0 | Krakops | U16 Open | French Defense: Rubinstein Variation, Fort Knox Variation | |
| Jun 22, 2026 | Skembris | ½–½ | Petcu | Round 7: Skembris, Simon Max - Petcu, Gabriel | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Jun 20, 2026 | Petcu | ½–½ | Ovitigala | Round 6: Petcu, Gabriel - Ovitigala, Chenitha Mithvidu | French Defense: Winawer Variation, Poisoned Pawn Variation, Main Line | |
| Jun 19, 2026 | Zev Ganganbars | 1–0 | Petcu | Round 5: Zev Ganganbars - Petcu, Gabriel | Catalan Opening | |
| Jun 18, 2026 | Petcu | 1–0 | Gorkov | Round 4: Petcu, Gabriel - Gorkov, Kirill | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jun 17, 2026 | Novikau | 1–0 | Petcu | Round 3: Novikau, Mikita - Petcu, Gabriel | Indian Defense: Anti-Nimzo-Indian | |
| Jun 16, 2026 | Petcu | ½–½ | Pert | Round 2: Petcu, Gabriel - Pert, Max | Caro-Kann Defense: Advance Variation, Short Variation | |
| Jun 15, 2026 | Amvrosiadis | 0–1 | Petcu | Round 1: Amvrosiadis, Themistoklis - Petcu, Gabriel | English Opening: Symmetrical Variation, Four Knights Variation | |
| May 7, 2026 | Ilinca | 1–0 | Petcu | Round 6: Ilinca, Felix-Antonio - Petcu, Gabriel | Nimzo-Indian Defense: Normal Variation, Gligoric System | |
| May 6, 2026 | Petcu | ½–½ | Bai | Round 5: Petcu, Gabriel - Bai, Adelard | Ruy Lopez: Morphy Defense, Cozio Defense | |
| May 5, 2026 | Sokolovsky | ½–½ | Petcu | Round 4: Sokolovsky, Yahli - Petcu, Gabriel | Sicilian Defense: Najdorf Variation, English Attack | |
| May 4, 2026 | Fier | 1–0 | Petcu | Round 2: Fier, Alexandr - Petcu, Gabriel | Indian Defense: Anti-Nimzo-Indian | |
| Apr 30, 2026 | Centamore | 1–0 | Petcu | Finals: Centamore, Alberto - Petcu, Gabriel | Sicilian Defense: Alapin Variation | |
| Apr 29, 2026 | Petcu | 0–1 | Boraso | Semifinals: Petcu, Gabriel - Boraso, Alessio | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Apr 28, 2026 | Petcu | ½–½ | Ballotti | Round 7: Petcu, Gabriel - Ballotti, Luca | French Defense: Winawer Variation, Retreat Variation | |
| Apr 27, 2026 | Frigerio | ½–½ | Petcu | Round 5: Frigerio, Riccardo - Petcu, Gabriel | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Apr 25, 2026 | Petcu | 0–1 | Marzano | Round 3: Petcu, Gabriel - Marzano, Carlo | Scandinavian Defense: Mieses-Kotroc Variation | |
| Apr 25, 2026 | Petcu | 1–0 | Paltrinieri | Round 2: Petcu, Gabriel - Paltrinieri, Nicholas | French Defense: Paulsen Variation | |
| Apr 24, 2026 | Petcu | 1–0 | Mirri | Round 1: Petcu, Gabriel - Mirri, Pietro | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Apr 6, 2026 | Petcu | 0–1 | Srihari L | X Open Semana Santa 2026 - Grupo A | Caro-Kann Defense: Advance Variation, Short Variation | |
| Apr 4, 2026 | Krstulovic | 1–0 | Petcu | X Open Semana Santa 2026 - Grupo A | Indian Defense: Accelerated London System | |
| Apr 3, 2026 | Petcu | ½–½ | Espinosa Aranda | X Open Semana Santa 2026 - Grupo A | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Apr 3, 2026 | Petcu | 1–0 | Favaloro | X Open Semana Santa 2026 - Grupo A | Caro-Kann Defense: Advance Variation, Short Variation | |
| Apr 2, 2026 | Flores Quillas | ½–½ | Petcu | X Open Semana Santa 2026 - Grupo A | Sicilian Defense: O'Kelly Variation, Yerevan System | |
| Nov 9, 2025 | D`auria | ½–½ | Petcu | Round 5: D`auria, Giuseppe - Petcu, Gabriel | Indian Defense | |
| Nov 8, 2025 | Petcu | 1–0 | Messina | Round 2: Petcu, Gabriel - Messina, Enrico | French Defense: Winawer Variation, Classical Variation | |
| Nov 7, 2025 | Mingrone | 0–1 | Petcu | Round 1: Mingrone, Agostino - Petcu, Gabriel | English Opening: Symmetrical Variation | |
| Nov 7, 2025 | Petcu | 0–1 | Paduano | Round 4: Petcu, Gabriel - Paduano, Claudio | Sicilian Defense: Lasker-Pelikan Variation | |
| Nov 7, 2025 | Vuelban | 0–1 | Petcu | Round 3: Vuelban, Virgilio - Petcu, Gabriel | English Opening: Symmetrical Variation | |
| May 3, 2025 | Petcu | 1–0 | Di Fonzo | Round 9: Petcu, Gabriel - Di Fonzo, Valerio | Pirc Defense | |
| May 2, 2025 | Petcu | 0–1 | Sitbon | Round 8: Petcu, Gabriel - Sitbon, Itay | French Defense: St. George Defense | |
| Apr 30, 2025 | Solomon | 1–0 | Petcu | Round 6: Solomon, Kenny - Petcu, Gabriel | Semi-Slav Defense | |
| Apr 29, 2025 | Blom | 1–0 | Petcu | Round 4: Blom, Vincent - Petcu, Gabriel | Indian Defense: London System | |
| Apr 27, 2025 | Petcu | 0–1 | Kiolbasa | Round 1: Petcu, Gabriel - Kiolbasa, Oliwia | Ruy Lopez: Morphy Defense, Classical Defense Deferred | |
| Apr 27, 2025 | Gagliardi | 1–0 | Petcu | Round 2: Gagliardi, Cristian - Petcu, Gabriel | Indian Defense: London System | |
| Jul 6, 2024 | Abategiovanni | 0–1 | Petcu | Round 9: Abategiovanni, Carlo Andrea - Petcu, Gabriel | Sicilian Defense: Closed | |
| Jul 5, 2024 | Petcu | ½–½ | Pulvirenti | Round 8: Petcu, Gabriel - Pulvirenti, Davide | French Defense: Rubinstein Variation, Blackburne Defense | |
| Jul 4, 2024 | Petcu | ½–½ | D`ippolito | Round 7: Petcu, Gabriel - D`ippolito, Nilo Alessandro | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jul 3, 2024 | Nassa | ½–½ | Petcu | Round 6: Nassa, Nicolas - Petcu, Gabriel | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| Jul 2, 2024 | Meloni | 0–1 | Petcu | Round 5: Meloni, Matteo - Petcu, Gabriel | Sicilian Defense: Najdorf Variation, Amsterdam Variation | |
| Apr 13, 2024 | Petcu | ½–½ | Lapiccirella | PlayOff | ? | |
| Apr 10, 2024 | Petcu | 1–0 | Calavalle | Group B | Semi-Slav Defense: Chigorin Defense | |
| Mar 29, 2024 | Pasini | 1–0 | Petcu | Round 1: Pasini, Nicolo - Petcu, Gabriel | Sicilian Defense: Richter-Rauzer Variation, Classical Variation | |
| Mar 24, 2024 | Petcu | 1–0 | Chimenti | Quinto turno: Petcu, Gabriel - Chimenti, Andrea | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| Mar 24, 2024 | Petcu | 1–0 | Schiatti | Quarto turno: Petcu, Gabriel - Schiatti, Piero | Caro-Kann Defense: Exchange Variation | |
| Mar 23, 2024 | Di Benedetto | 1–0 | Petcu | Terzo turno: Di Benedetto, Edoardo - Petcu, Gabriel | Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | |
| Mar 23, 2024 | Petcu | 1–0 | Gazzato | Secondo turno: Petcu, Gabriel - Gazzato, Nicolo` | Grünfeld Defense: Exchange Variation, Modern Exchange Variation | |
| Sep 14, 2024 | Knapp | 1–0 | Petcu | Round 8: Knapp, Joseph - Petcu, Gabriel | Sicilian Defense: Najdorf Variation, Lipnitsky Attack | |
| Sep 13, 2024 | Steiger | ½–½ | Petcu | Round 7: Steiger, Michael - Petcu, Gabriel | English Opening: Symmetrical Variation | |
| Sep 12, 2024 | Petcu | 0–1 | Filippone | Round 6: Petcu, Gabriel - Filippone, Matteo | Sicilian Defense: Hyperaccelerated Dragon | |
| Sep 11, 2024 | Petcu | 1–0 | Padroni | Round 5: Petcu, Gabriel - Padroni, Marco | Caro-Kann Defense: Advance Variation, Short Variation | |
| Sep 11, 2024 | Hafner | ½–½ | Petcu | Round 4: Hafner, Bernhard - Petcu, Gabriel | Canard Opening | |
| Sep 10, 2024 | Petcu | 1–0 | Vertuccio | Round 3: Petcu, Gabriel - Vertuccio, Roberto | Sicilian Defense: Kan Variation, Modern Variation | |
| Sep 9, 2024 | Cusumano | ½–½ | Petcu | Round 2: Cusumano, Steven - Petcu, Gabriel | Sicilian Defense: Najdorf Variation | |
| Sep 8, 2024 | Petcu | 1–0 | Launert | Round 1: Petcu, Gabriel - Launert, Martin, Dr. | Ruy Lopez: Closed, Anti-Marshall | |
| — | Petcu | 1–0 | Distaso | Round 5: Petcu, Gabriel - Distaso, Antonio Pio | Pirc Defense | |
| — | Petcu | 0–1 | Dardha | Round 1: Petcu, Gabriel - Dardha, Daniel | Sicilian Defense: Richter-Rauzer Variation | |
| — | Petcu | 0–1 | Cappelletto | Round 2: Petcu, Gabriel - Cappelletto, Joshuaede | Sicilian Defense: Dragon Variation, Yugoslav Attack, Early Deviations | |
| — | Petcu | 1–0 | Sai Kiran Y | Round 4: Petcu, Gabriel - Sai Kiran Y | Sicilian Defense: Najdorf Variation | |
| — | Petcu | ½–½ | Di Benedetto | Round 7: Petcu, Gabriel - Di Benedetto, Edoardo | French Defense: Steinitz Variation, Boleslavsky Variation | |
| — | Petcu | 1–0 | Pellizzieri | Round 9: Petcu, Gabriel - Pellizzieri, Fabio Angelo | Sicilian Defense: Najdorf Variation | |
| — | Nardoni | 0–1 | Petcu | Round 3: Nardoni, Matteo - Petcu, Gabriel | Sicilian Defense: Najdorf Variation | |
| — | Carnicelli | 1–0 | Petcu | Round 4: Carnicelli, Valerio - Petcu, Gabriel | Sicilian Defense: Moscow Variation | |
| — | Chatalbashev | 1–0 | Petcu | Round 5: Chatalbashev, Boris - Petcu, Gabriel | English Opening: Symmetrical Variation | |
| — | Solodovnichenko | 1–0 | Petcu | Round 8: Solodovnichenko, Yuri - Petcu, Gabriel | Sicilian Defense: Closed | |