17 Augustus 2025
| 19:30 |
Athletic Club 
3 - 2
Sevilla FC 
|
25 Augustus 2025
| 19:30 |
Athletic Club
1 - 0
Rayo Vallecano de Madrid 
|
31 Augustus 2025
| 19:00 |
Real Betis Balompié 
1 - 2
Athletic Club
|
13 September 2025
| 18:30 |
Athletic Club
0 - 1
Deportivo Alavés 
|
16 September 2025
| 18:45 |
Athletic Club
0 - 2
Arsenal FC 
|
20 September 2025
| 21:00 |
Valencia CF 
2 - 0
Athletic Club
|
23 September 2025
| 19:00 |
Athletic Club
1 - 1
Girona FC 
|
27 September 2025
| 21:00 |
Villarreal CF 
1 - 0
Athletic Club
|
01 Oktober 2025
| 21:00 |
BV Borussia 09 Dortmund 
4 - 1
Athletic Club
|
04 Oktober 2025
| 18:30 |
Athletic Club
2 - 1
RCD Mallorca 
|