| Nov 1, 2025 | Bekentayev | 1–0 | Okamura | Round 11: Bekentayev, Uran - Okamura, Milton Kasuo | Sicilian Defense: Taimanov Variation, Szén Variation | |
| Oct 31, 2025 | Okamura | 1–0 | Turegano Moratalla | Round 10: Okamura, Milton Kasuo - Turegano Moratalla, Santiago | King's Indian Defense: Orthodox Variation | |
| Oct 30, 2025 | Vasilyev | 1–0 | Okamura | Round 9: Vasilyev, Mikhail - Okamura, Milton Kasuo | Ruy Lopez: Closed, Chigorin Defense, Panov System | |
| Oct 29, 2025 | Okamura | ½–½ | Shaw | Round 8: Okamura, Milton Kasuo - Shaw, Clifford | Dutch Defense: Stonewall Variation, Modern Variation | |
| Oct 28, 2025 | Fischer | ½–½ | Okamura | Round 7: Fischer, Robert J - Okamura, Milton Kasuo | Ponziani Opening: Jaenisch Counterattack | |
| Oct 26, 2025 | Okamura | 0–1 | Miltner | Round 6: Okamura, Milton Kasuo - Miltner, Arndt | Semi-Slav Defense: Accelerated Meran Variation | |
| Oct 25, 2025 | Vifian | 0–1 | Okamura | Round 5: Vifian, Heinz - Okamura, Milton Kasuo | Queen's Pawn Game: London System | |
| Oct 24, 2025 | Okamura | 0–1 | Henttinen | Round 4: Okamura, Milton Kasuo - Henttinen, Markku I.O. | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Oct 23, 2025 | Marcus | 0–1 | Okamura | Round 3: Marcus, Joel - Okamura, Milton Kasuo | Queen's Pawn Game: London System | |
| Oct 22, 2025 | Okamura | 0–1 | Welling | Round 2: Okamura, Milton Kasuo - Welling, Gerard | King's Indian Defense: Orthodox Variation, Positional Defense | |
| Feb 26, 2025 | Okamura | 1–0 | Meduna | World Senior Team 2025 S65 | Queen's Pawn Game | |
| Feb 24, 2025 | Baarslag | 1–0 | Okamura | World Senior Team 2025 S65 | English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense | |
| Feb 18, 2025 | Ceschia | 0–1 | Okamura | World Senior Team 2025 S65 | Queen's Pawn Game: Colle System | |
| Dec 2, 2024 | Okamura | 0–1 | Rodi | V Aberto Internacional de Xadrez Duchamp In Rio 2024 | Semi-Slav Defense: Stoltz Variation | |
| Dec 2, 2024 | Okamura | 0–1 | Patroclo | V Aberto Internacional de Xadrez Duchamp In Rio 2024 | King's Indian Defense: Orthodox Variation | |
| Aug 28, 2024 | Okamura | 0–1 | Ribeiro | IV Niterói Chess Open 2024 - STD | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 28, 2024 | Filgueiras | 1–0 | Okamura | IV Niterói Chess Open 2024 - STD | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Aug 25, 2024 | Okamura | 1–0 | Carvalho | Campeonato Brasileiro Senior +65 STD 2024 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 2, 2024 | Rangel | ½–½ | Okamura | Round 6: Rangel, Daniel - Okamura, Milton Kasuo | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Jun 2, 2024 | Okamura | ½–½ | Pereira | Round 5: Okamura, Milton Kasuo - Pereira, Arthur Macedo | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Apr 25, 2024 | Hoffman | 1–0 | Okamura | Round 6: Hoffman, Alejandro - Okamura, Milton Kasuo | Réti Opening | |
| Aug 25, 2024 | Okamura | * | Fernandes Jr. | Round 6: Okamura, Milton Kasuo - Fernandes Jr., Jose Costa | ? | |
| Aug 24, 2024 | Okamura | ½–½ | Torres | Round 3: Okamura, Milton Kasuo - Torres, Jose Belo | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 24, 2024 | Macedo | 0–1 | Okamura | Round 4: Macedo, Alexandre Soares de - Okamura, Milton Kasuo | Bird Opening | |
| Aug 23, 2024 | Okamura | 1–0 | Campos Jr | Round 1: Okamura, Milton Kasuo - Campos Jr, Antonio De Siqueira | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 23, 2024 | Dantas | ½–½ | Okamura | Round 2: Dantas, Francisco - Okamura, Milton Kasuo | Slav Defense: Exchange Variation, Symmetrical Line | |
| Aug 18, 2023 | Okamura | 1–0 | Oliveira | Campeonato Brasileiro Senior +65 STD 2023 | King's Indian Defense: Orthodox Variation | |
| Dec 8, 2022 | Viana | 1–0 | Okamura | Duchamp Open | ? | |
| Dec 7, 2022 | Okamura | 1–0 | Mesquita | Duchamp Open | ? | |
| Nov 2, 2021 | Okamura | 1–0 | Borges | 87o Campeonato Brasileiro Absoluto Final Aberta | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 2, 2021 | Correa | 1–0 | Okamura | 87o Campeonato Brasileiro Absoluto Final Aberta | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Nov 1, 2021 | Okamura | 1–0 | Vargas | 87o Campeonato Brasileiro Absoluto Final Aberta | King's Indian Defense: Orthodox Variation | |
| Oct 31, 2021 | Okamura | 0–1 | Souza | 87o Campeonato Brasileiro Absoluto Final Aberta | Indian Defense: Normal Variation | |
| Oct 31, 2021 | Rodrigues Mota | 1–0 | Okamura | 87o Campeonato Brasileiro Absoluto Final Aberta | Sicilian Defense: Taimanov Variation | |
| Oct 30, 2021 | De Oliveira Filho | 0–1 | Okamura | 87o Campeonato Brasileiro Absoluto Final Aberta | Semi-Slav Defense: Meran Variation, Wade Variation | |
| Oct 29, 2021 | Okamura | ½–½ | Damasceno | 87o Campeonato Brasileiro Absoluto Final Aberta | Semi-Slav Defense: Stoltz Variation | |
| Oct 29, 2021 | Carstens Dobuchak | 1–0 | Okamura | 87o Campeonato Brasileiro Absoluto Final Aberta | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Oct 28, 2021 | Okamura | 1–0 | Carvalho | 87o Campeonato Brasileiro Absoluto Final Aberta | Grünfeld Defense: Brinckmann Attack | |
