| 22 ago 2026 | Mizzi, Jack 2146 | Portelli, Matthew 2134 | 0-1 | D00 Apertura de Peón de Dama: Stonewall Attack | Malta Junior U20 Rapid Championship | 44 | Ver |
| 9 jul 2026 | Stickler, Florentin 2210 | Portelli, Matthew 2098 | 0-1 | C11 Defensa Francesa: Steinitz Variation, Boleslavsky Variation | rzeszow | 68 | Ver |
| 9 jul 2026 | Portelli, Matthew 2098 | Stickler, Florentin 2210 | 1-0 | B63 Defensa Siciliana: Richter-Rauzer Variation, Classical Variation | rzeszow | 28 | Ver |
| 9 jul 2026 | Chuiko, Maksym 2103 | Portelli, Matthew 2098 | 0-1 | A08 Ataque Indio de Rey: Sicilian Variation | rzeszow | 57 | Ver |
| 9 jul 2026 | Portelli, Matthew 2098 | Chuiko, Maksym 2103 | ½-½ | C47 Apertura de los Cuatro Caballos: Gunsberg Variation | rzeszow | 24 | Ver |
| 9 jul 2026 | Portelli, Matthew 2098 | Pycinski, Wladyslaw 2191 | 1-0 | C47 Apertura de los Cuatro Caballos: Gunsberg Variation | rzeszow | 28 | Ver |
| 9 jul 2026 | Pycinski, Wladyslaw 2191 | Portelli, Matthew 2098 | 1-0 | C01 Defensa Francesa: Exchange Variation | rzeszow | 16 | Ver |
| 9 jul 2026 | Portelli, Matthew 2098 | Majcher, Igor 2116 | 1-0 | C41 Defensa Philidor: Lion Variation | rzeszow | 28 | Ver |
| 9 jul 2026 | Majcher, Igor 2116 | Portelli, Matthew 2098 | 1-0 | A07 King's Indian Attack, with e6 | rzeszow | 39 | Ver |
| 9 jul 2026 | Portelli, Matthew 2098 | Niezhentsev, Kyrylo 2244 | 1-0 | B43 Defensa Siciliana: Kan Variation, Wing Attack | rzeszow | 36 | Ver |
| 9 jul 2026 | Niezhentsev, Kyrylo 2244 | Portelli, Matthew 2098 | 0-1 | C11 Defensa Francesa: Steinitz Variation, Boleslavsky Variation | rzeszow | 42 | Ver |
| 9 jul 2026 | Portelli, Matthew 2098 | Sobol, Matvii 2431 | ½-½ | B10 Defensa Caro-Kann: Two Knights Attack | rzeszow | 96 | Ver |
| 9 jul 2026 | Sobol, Matvii 2431 | Portelli, Matthew 2098 | 1-0 | C03 Defensa Francesa: Tarrasch Variation | rzeszow | 38 | Ver |
| 9 jul 2026 | Karvatskyi, Oleksii 2276 | Portelli, Matthew 2098 | 0-1 | C00 Defensa Francesa: Knight Variation | rzeszow | 45 | Ver |
| 9 jul 2026 | Portelli, Matthew 2098 | Karvatskyi, Oleksii 2276 | 0-1 | B33 Defensa Siciliana: Lasker-Pelikan Variation | rzeszow | 33 | Ver |
| 19 abr 2026 | Portelli, Matthew 2213 | Golsta, Madara 2008 | ½-½ | C47 Apertura de los Cuatro Caballos: Scotch Variation Accepted, Main Line | EIIC 2026 | 44 | Ver |
| 18 abr 2026 | Holtel, Jasper 2370 | Portelli, Matthew 2213 | 1-0 | E09 Apertura Catalana: Closed Variation, Traditional Variation | EICC 2026 | 94 | Ver |
| 16 abr 2026 | Portelli, Matthew 2213 | Zhuk, Ivan 2068 | 1-0 | B98 Defensa Siciliana: Najdorf Variation, Traditional Line | EIIC 2026 | 79 | Ver |
| 15 abr 2026 | Zawisza, Alan 2007 | Portelli, Matthew 2213 | 0-1 | C11 Defensa Francesa: Classical Variation, Shirov-Anand Variation | EICC 2026 | 25 | Ver |
| 13 abr 2026 | Margaritis, Ioannis M 2012 | Portelli, Matthew 2213 | 1-0 | D20 Gambito de Dama aceptado: Central Variation, Alekhine System | EICC 2026 | 81 | Ver |