| NextGen | 28/08/12 | Athletic Club [Youth] | - | Olympiakos Piraeus [Youth] | 4:0 |  |
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| NextGen | 12/12/12 | Olympiakos Piraeus [Youth] | - | Athletic Club [Youth] | 1:0 |
| NextGen | 28/08/12 | Athletic Club [Youth] | - | Olympiakos Piraeus [Youth] | 4:0 | |
|||
| NextGen | 12/12/12 | Olympiakos Piraeus [Youth] | - | Athletic Club [Youth] | 1:0 |
| Guillermo Fernández Hierro | |
| Born: | 23.05.1993 |
| Place of birth: |
Bilbao, 
Spain |
| Nationality: |
Spain
|
| Height: | 181 cm |
| Weight: | 70 kg |
| Position(s): | Centre Forward |
| Foot: | right |