| 27 jun 2026 | Lapaj, Mateusz 2170 | Klimkowski, Jan 2463 | 0-1 | B23 Defensa Siciliana: Closed | Macieja Memorial | 51 | Ver |
| 27 jun 2026 | Bartodziej, Bartosz 2063 | Lapaj, Mateusz 2170 | 0-1 | C05 Defensa Francesa: Tarrasch Variation, Pawn Center Variation | Macieja Memorial | 17 | Ver |
| 27 jun 2026 | Lapaj, Mateusz 2170 | Malek, Jan 2404 | 0-1 | B56 Defensa Siciliana: Kupreichik Variation | Macieja Memorial | 22 | Ver |
| 27 jun 2026 | Haladaj, Adam 2089 | Lapaj, Mateusz 2170 | 0-1 | C06 Defensa Francesa: Tarrasch Variation, Closed Variation, Main Line | Macieja Memorial | 49 | Ver |
| 13 may 2026 | Lapaj, Mateusz 2115 | Metreveli, Georgii 2163 | 0-1 | B34 Defensa Siciliana: Accelerated Dragon, Modern Variation | MEN 8th ICCD World Individual Blitz Chess Championship | 72 | Ver |
| 13 may 2026 | Piekielny, Pawel 2205 | Lapaj, Mateusz 2115 | ½-½ | C02 Defensa Francesa: Advance Variation, Euwe Variation | MEN 8th ICCD World Individual Blitz Chess Championship | 5 | Ver |
| 12 may 2026 | Lapaj, Mateusz 2096 | Kasumovic, Muhidin 2042 | ½-½ | B06 Defensa Rata: Accelerated Gurgenidze | rapid men | 49 | Ver |
| 12 may 2026 | Hallossy, Tibor 2005 | Lapaj, Mateusz 2096 | 0-1 | E63 Defensa India de Rey: Fianchetto Variation, Panno Variation | rapid men | 32 | Ver |
| 12 may 2026 | Lapaj, Mateusz 2096 | Bozinovic, Bogdan 2098 | 1-0 | B43 Defensa Siciliana: Kan Variation, Knight Variation | rapid men | 19 | Ver |
| 12 may 2026 | Filippskikh, Oleksii 2014 | Lapaj, Mateusz 2096 | ½-½ | E63 Defensa India de Rey: Fianchetto Variation, Panno Variation | rapid men | 34 | Ver |
| 12 may 2026 | Kettebekov, Samazhan 2026 | Lapaj, Mateusz 2096 | 0-1 | E92 Defensa India de Rey: Orthodox Variation, Gligoric-Taimanov System | rapid men | 78 | Ver |
| 2 ene 2026 | Tsetskhladze, Mariam 2150 | Lapaj, Mateusz 2189 | 1-0 | C03 Defensa Francesa: Tarrasch Variation, Morozevich Variation | Open A | 27 | Ver |
| 31 dic 2025 | Lapaj, Mateusz 2189 | Kaczmarek, Aleksander 2334 | 0-1 | C25 Apertura Vienesa: Paulsen Variation | Open A | 26 | Ver |
| 30 dic 2025 | Adamovics, Aleksejs 2104 | Lapaj, Mateusz 2189 | 0-1 | E62 Defensa India de Rey: Fianchetto Variation, Carlsbad Variation | Open A | 39 | Ver |
| 29 dic 2025 | Lapaj, Mateusz 2189 | Oborski, Artur 2102 | ½-½ | C02 Defensa Francesa: Advance Variation, Euwe Variation | Open A | 31 | Ver |
| 28 dic 2025 | Phatak Aanjaneya 2129 | Lapaj, Mateusz 2189 | 0-1 | B06 Defensa Moderna: Standard Defense | XXXVI Miedzynarodowy Festiwal Szachowy CRACOVIA 2025 Grupa A | 32 | Ver |
| 27 dic 2025 | Lapaj, Mateusz 2189 | Kania, Franciszek 2070 | 0-1 | E71 Defensa India de Rey: Karpov System | XXXVI Miedzynarodowy Festiwal Szachowy CRACOVIA 2025 Grupa A | 38 | Ver |
| 2 sep 2025 | Lapaj, Mateusz 2209 | Grochol, Kamil 2172 | ½-½ | B02 Defensa Alekhine: Scandinavian Variation | 2 liga 2025 1 | 9 | Ver |
| 1 sep 2025 | Terkiewicz, Bruno 2185 | Lapaj, Mateusz 2209 | 1-0 | E71 Defensa India de Rey: Karpov System | 2liga_2025_3 | 41 | Ver |