| Apr 8, 2026 | Ermachenko | ½–½ | Fernandez Guillen | Round 3: Ermachenko, Manuel - Fernandez Guillen, Ernesto J. | Scotch Game: Schmidt Variation | |
| Apr 6, 2026 | Baenziger | ½–½ | Ermachenko | Grenke Chess Festival 2026 Open | Queen's Gambit Declined | |
| Apr 4, 2026 | Degraeve | 1–0 | Ermachenko | Grenke Chess Festival 2026 Open | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Oct 12, 2025 | Ermachenko | 1–0 | Walker | Round 9: Ermachenko, Manuel - Walker, Samuel A | Sicilian Defense: Dragon Variation, Classical Variation | |
| Oct 11, 2025 | Mazanek | ½–½ | Ermachenko | Round 8: Mazanek, Kamil - Ermachenko, Manuel | Sicilian Defense: Delayed Alapin Variation | |
| Oct 10, 2025 | Ermachenko | 1–0 | Lielmezs | Round 7: Ermachenko, Manuel - Lielmezs, Girts | Scandinavian Defense: Valencian Variation | |
| Oct 9, 2025 | Oncel | ½–½ | Ermachenko | Round 6: Oncel, Ilie - Ermachenko, Manuel | English Opening: King's English Variation, Two Knights Variation, Reversed Dragon | |
| Oct 8, 2025 | Ermachenko | ½–½ | Montesinos Diaz | Round 5: Ermachenko, Manuel - Montesinos Diaz, Luis | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Oct 7, 2025 | Schenk Papke | ½–½ | Ermachenko | Round 4: Schenk Papke, Andres - Ermachenko, Manuel | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Oct 6, 2025 | Ermachenko | 1–0 | Maloberti | Round 3: Ermachenko, Manuel - Maloberti, David | French Defense: Winawer Variation, Portisch-Hook Variation | |
| Aug 4, 2024 | Ermachenko | ½–½ | Tabuenca Mendataurigoitia | CE SUB 18 RAPIDO.2024 | Philidor Defense: Exchange Variation | |
| Aug 4, 2024 | Ermachenko | 0–1 | Cacheiro Blanco | CE SUB 18 RAPIDO.2024 | Sicilian Defense: Najdorf Variation | |
| Aug 4, 2024 | Fernandez Rosado | 0–1 | Ermachenko | CE SUB 18 RAPIDO.2024 | Queen's Gambit Declined: Semi-Tarrasch Defense | |
| Aug 4, 2024 | Curiel Garcia | 1–0 | Ermachenko | CE SUB 18 RAPIDO.2024 | Queen's Pawn Game: Accelerated London System | |
| Aug 4, 2024 | Vergara Anton | 0–1 | Ermachenko | CE SUB 18 RAPIDO.2024 | Tarrasch Defense: Symmetrical Variation | |
| Aug 3, 2024 | Ermachenko | ½–½ | Boix Redorta | CE SUB 18.2024 | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Aug 3, 2024 | Ermachenko | 1–0 | Larranaga Juaristi | CE SUB 18 RAPIDO.2024 | Sicilian Defense: Kalashnikov Variation | |
| Aug 3, 2024 | Ermachenko | 1–0 | Fernandez Ramos | CE SUB 18 RAPIDO.2024 | Italian Game: Giuoco Piano | |
| Aug 3, 2024 | Romero Soler | 0–1 | Ermachenko | CE SUB 18 RAPIDO.2024 | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Aug 3, 2024 | Serrano Ruiz | 0–1 | Ermachenko | CE SUB 18 RAPIDO.2024 | Sicilian Defense: Delayed Alapin Variation | |
| Aug 2, 2024 | Ermachenko | 0–1 | Aguado Doncel | CE SUB 18.2024 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Aug 2, 2024 | Ruiz Fernandez | ½–½ | Ermachenko | CE SUB 18.2024 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| Aug 1, 2024 | Macias Pino | 1–0 | Ermachenko | CE SUB 18.2024 | English Opening: Agincourt Defense | |
| Jul 31, 2024 | Ermachenko | ½–½ | Perea Fruet | CE SUB 18.2024 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jul 31, 2024 | Gomez Falagan | 0–1 | Ermachenko | CE SUB 18.2024 | Tarrasch Defense: Two Knights Variation | |
| Jul 30, 2024 | Ermachenko | 1–0 | Li Chen | CE SUB 18.2024 | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Jul 29, 2024 | Ermachenko | 1–0 | Almeida Cubas | CE SUB 18.2024 | Sicilian Defense: Accelerated Dragon | |
| Jul 29, 2024 | Cereijo Suarez | 0–1 | Ermachenko | CE SUB 18.2024 | Tarrasch Defense: Dubov Tarrasch | |
| Apr 2, 2024 | Ermachenko | 0–1 | Yuffa | Menorca Open 2024 | Sicilian Defense: Najdorf Variation, English Attack | |
| Nov 24, 2023 | Ermachenko | ½–½ | Paseka | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Sicilian Defense: Richter-Rauzer Variation | |
| Nov 23, 2023 | Moldagali | 0–1 | Ermachenko | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Sicilian Defense: Najdorf Variation | |
| Nov 21, 2023 | Lavrencic | 1–0 | Ermachenko | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Sicilian Defense: Najdorf Variation | |
| Nov 20, 2023 | Ermachenko | 0–1 | Sapenov | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Ruy Lopez: Morphy Defense | |
| Nov 18, 2023 | Khripachenko | 0–1 | Ermachenko | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Sicilian Defense: Najdorf Variation, English Attack | |
| Nov 17, 2023 | Ermachenko | ½–½ | Xu | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Sicilian Defense: Najdorf Variation, Main Line | |
| Nov 14, 2023 | Suleimen | 1–0 | Ermachenko | FIDEWORLDYOUTHCHESSCHAMPIONSHIP Open 16 | Sicilian Defense: Najdorf Variation, English Attack | |
| Jul 30, 2023 | Ermachenko | 1–0 | Gonzalez Castillo | CE SUB 16 RAPIDO. 2023 | Modern Defense | |
| Jul 30, 2023 | Ermachenko | 1–0 | Pleschke | CE SUB 16 RAPIDO. 2023 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jul 30, 2023 | Del Prado Rodriguez | 1–0 | Ermachenko | CE SUB 16 RAPIDO. 2023 | Nimzo-Indian Defense: Normal Variation | |
| Jul 30, 2023 | Salinas Tomas | 1–0 | Ermachenko | CE SUB 16 RAPIDO. 2023 | Indian Defense: Knights Variation | |
| Jul 30, 2023 | Marrero Rodriguez | 0–1 | Ermachenko | CE SUB 16 RAPIDO. 2023 | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Jul 29, 2023 | Ermachenko | 1–0 | Domene Mulyukov | CE SUB 16 RAPIDO. 2023 | Modern Defense | |
| Jul 29, 2023 | Miranda Calvo | 0–1 | Ermachenko | CE SUB 16 RAPIDO. 2023 | Queen's Pawn Game: Accelerated London System | |
| Jul 29, 2023 | Munoz Valles | 0–1 | Ermachenko | CE SUB 16 RAPIDO. 2023 | Semi-Slav Defense | |
| — | Ermachenko | 1–0 | Herrero Pena | juvenil_2025 | Sicilian Defense: French Variation | |
| — | Ermachenko | ½–½ | Pedreira Garcia | juvenil_2025 | French Defense: Steinitz Variation, Boleslavsky Variation | |
| — | Ermachenko | ½–½ | Habans Aguerrea | juvenil_2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| — | Ermachenko | ½–½ | Conon | juvenil_2025 | Italian Game: Classical Variation, Giuoco Pianissimo, with a5 | |
| — | Ermachenko | ½–½ | Aleksanyan Israilyan | juvenil_2025 | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| — | Molina Souponitskaia | 0–1 | Ermachenko | juvenil_2025 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| — | Bergaretxe Gavalda | 0–1 | Ermachenko | juvenil_2025 | King's Indian Defense: Normal Variation, King's Knight Variation | |
| — | Krauchi Romero | 1–0 | Ermachenko | juvenil_2025 | Indian Defense: Anti-Nimzo-Indian | |
| — | Hervada Serrano | ½–½ | Ermachenko | juvenil_2025 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
