| Spain Tercera Group 4 | 2017/04/07 18:58 | Aurrera Ondarroa v Lagun Onak | L | 1-0 |
| Spain Tercera Group 4 | 2021/03/06 15:30 | Lagun Onak v CD Ariznabarra | W | 3-0 |
| Spain Tercera Group 4 | 2021/02/27 16:00 | Cultural de Durango v Lagun Onak | L | 2-0 |
| Spain Tercera Group 4 | 2021/02/20 15:30 | Lagun Onak v Sodupe | D | 1-1 |
| Spain Tercera Group 4 | 2021/02/13 15:00 | CD Anaitasuna v Lagun Onak | L | 3-2 |
| Spain Tercera Group 4 | 2021/02/07 15:30 | Lagun Onak v Pasaia KE | L | 2-3 |
| Spain Tercera Group 4 | 2021/01/30 15:00 | San Ignacio v Lagun Onak | L | 2-0 |
| Spain Tercera Group 4 | 2021/01/23 15:30 | Lagun Onak v Basconia | W | 1-0 |
| Spain Tercera Group 4 | 2021/01/16 15:30 | Santurtzi v Lagun Onak | L | 1-0 |
| Spain Tercera Group 4 | 2021/03/06 15:30 | Aurrera Ondarroa v Santutxu | W | 3-1 |
| Spain Tercera Group 4 | 2021/02/27 15:30 | Tolosa v Aurrera Ondarroa | L | 2-1 |
| Spain Tercera Group 4 | 2021/02/20 15:30 | Aurrera Ondarroa v Real Sociedad C | L | 1-3 |
| Spain Tercera Group 4 | 2021/02/13 16:00 | Gernika v Aurrera Ondarroa | L | 3-1 |
| Spain Tercera Group 4 | 2021/02/10 18:30 | Balmaseda FC v Aurrera Ondarroa | W | 0-1 |
| Spain Tercera Group 4 | 2021/02/06 16:30 | Aurrera Ondarroa v Sestao River | L | 0-1 |
| Spain Tercera Group 4 | 2021/01/30 16:30 | SD Deusto v Aurrera Ondarroa | L | 3-1 |
| Spain Tercera Group 4 | 2021/01/24 10:30 | Aurrera Ondarroa v SD Beasain | D | 1-1 |