| 5 jul 2026 | Mafra, Kaiser Luiz 2009 | Cunha, Lucas Aguiar 2252 | 1-0 | B06 Defensa Moderna: Standard Defense | X TORNEIO INTERNACIONAL DE XADREZ SESC CAIOBÁ - CLASSICO A | 30 | Ver |
| 2 jul 2026 | Mafra, Kaiser Luiz 2009 | Melian, Juan Sebastian 2377 | 0-1 | A30 Apertura Inglesa: Symmetrical Variation | X Caioba STD | 36 | Ver |
| 28 jun 2026 | Acosta, Pablo Ismael 2473 | Mafra, Kaiser Luiz 2042 | 1-0 | A48 Ataque Torre: Fianchetto Defense | X Caioba STD | 23 | Ver |
| 27 jun 2026 | Santiago, Yago De Moura 2485 | Mafra, Kaiser Luiz 2077 | 1-0 | A48 East Indian Defense | X Caioba RPD | 33 | Ver |
| 9 nov 2025 | Amerkeshev, Madiyar 2241 | Mafra, Kaiser Luiz 2042 | 1-0 | A45 Defensa India: Accelerated London System | FIDE World Amateur Chess Championships 2025 | 49 | Ver |
| 7 nov 2025 | Mafra, Kaiser Luiz 2042 | Krivenko, Sergei 2262 | 0-1 | A16 Apertura Inglesa: Anglo-Indian Defense, Queen's Knight Variation | FIDE World Amateur Chess Championships 2025 | 35 | Ver |