| 15. Round | 11/12/1999 | RC Celta | - | Athletic Club | 1:1 | ||||
| 29. Round | 18/03/2000 | Real Oviedo | - | Athletic Club | 1:0 |  |
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| 37. Round | 13/05/2000 | Espanyol Barcelona | - | Athletic Club | 0:0 | |
| 15. Round | 11/12/1999 | RC Celta | - | Athletic Club | 1:1 | ||||
| 29. Round | 18/03/2000 | Real Oviedo | - | Athletic Club | 1:0 | |
|||
| 37. Round | 13/05/2000 | Espanyol Barcelona | - | Athletic Club | 0:0 | |
| Mikel Lasa Goikoetxea | |
| Born: | 09.09.1971 |
| Place of birth: |
Legorreta, 
Spain |
| Nationality: |
Spain
|
| Height: | 176 cm |
| Weight: | 69 kg |
| Position(s): | Left Back |