| Feb 1, 2026 | Medina Cruzata | 0–1 | De Mey | III Sampa Chess Open - STD - ULTIMA RODADA | Queen's Gambit Declined: Westphalian Variation | |
| Jan 10, 2026 | De Mey | 1–0 | Hernandez | Tercer Torneo Internacional Club Caissa Guatemala | Scandinavian Defense: Gubinsky-Melts Defense | |
| Jan 10, 2026 | Lopez Fuentes | 1–0 | De Mey | Tercer Torneo Internacional Club Caissa Guatemala | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jan 9, 2026 | De Mey | 1–0 | Pineda D. | Tercer Torneo Internacional Club Caissa Guatemala | Scandinavian Defense: Gubinsky-Melts Defense | |
| Jan 8, 2026 | De Mey | 0–1 | Hidalgo Avila | Tercer Torneo Internacional Club Caissa Guatemala | Sicilian Defense: Najdorf Variation | |
| Jan 8, 2026 | Guzman | 0–1 | De Mey | Tercer Torneo Internacional Club Caissa Guatemala | Sicilian Defense: Closed | |
| Jan 7, 2026 | De Mey | 0–1 | Bruzon Batista | Tercer Torneo Internacional Club Caissa Guatemala | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Oct 12, 2025 | De Mey | 1–0 | Franken | Round 7: De Mey, Juan Pablo - Franken, Angelo | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Oct 12, 2025 | Lopez | 1–0 | De Mey | Round 6: Lopez, Jasel - De Mey, Juan Pablo | King's Indian Attack | |
| Oct 11, 2025 | De Mey | 1–0 | Almedina Ortiz | Round 4: De Mey, Juan Pablo - Almedina Ortiz, Edgardo J. | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Oct 10, 2025 | De Mey | ½–½ | Van Bemmelen | Round 3: De Mey, Juan Pablo - Van Bemmelen, Ursus | Sicilian Defense: Najdorf Variation | |
| Oct 10, 2025 | Carrillo | 0–1 | De Mey | Round 2: Carrillo, Jose Antonio - De Mey, Juan Pablo | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Oct 10, 2025 | De Mey | 1–0 | Pop | Round 1: De Mey, Juan Pablo - Pop, Serapio | Sicilian Defense: Old Sicilian | |
| Sep 17, 2025 | Sanchez Alvarez | ½–½ | De Mey | Round 5: Sanchez Alvarez, Roberto Carlos - De Mey, Juan Pablo | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 13, 2025 | Lohia | 1–0 | De Mey | Reykjavik Open 2025 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Apr 10, 2025 | Heimisson | 1–0 | De Mey | Reykjavik Open 2025 | Queen's Gambit Declined: Charousek Variation | |
| Sep 22, 2024 | De Mey | ½–½ | KIGIGHA | 45th FIDE Chess Olympiad | Scandinavian Defense: Main Line, Mieses Variation | |
| Sep 21, 2024 | De Mey | 1–0 | Allam | 45th FIDE Chess Olympiad | Queen's Pawn Game: London System, with e6 | |
| Sep 20, 2024 | Hasford | ½–½ | De Mey | 45th FIDE Chess Olympiad | Queen's Gambit Declined: Three Knights, Vienna Variation | |
| Sep 19, 2024 | Kamara | 0–1 | De Mey | 45th FIDE Chess Olympiad | Sicilian Defense: O'Kelly Variation, Normal System | |
| Sep 18, 2024 | De Mey | ½–½ | Pg | 45th FIDE Chess Olympiad | Sicilian Defense: Taimanov Variation | |
| Sep 15, 2024 | Celis | 0–1 | De Mey | 45th FIDE Chess Olympiad | Zukertort Opening | |
| Sep 14, 2024 | Darryl Allen | 0–1 | De Mey | 45th FIDE Chess Olympiad | Queen's Pawn Game: Zukertort Variation | |
| Sep 13, 2024 | De Mey | ½–½ | Kudakwashe Chinake | 45th FIDE Chess Olympiad | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Sep 12, 2024 | Bai | 1–0 | De Mey | 45th FIDE Chess Olympiad | Catalan Opening: Closed | |
| Sep 11, 2024 | De Mey | 0–1 | Quizon | 45th FIDE Chess Olympiad | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jul 13, 2022 | Kovchan | 1–0 | De Mey | Sant Marti Open | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
