1988-89 Squad
| NO. | NAME | POS | HEIGHT | WEIGHT | DOB | AGE | BIRTHPLACE | PREFERRED FOOT | |
|---|---|---|---|---|---|---|---|---|---|
 | J. Aguirre | MF | 1.78 m | 75 kg | 3/17/1964 | 24 | Ortuella | ||
| | R. Alkorta | DF | 1.79 m | 74 kg | 9/16/1968 | 19 | Bilbao | ||
| | G. Andrinua | DF | 1.82 m | 76 kg | 5/9/1964 | 24 | Getxo | ||
| | E. Argote | FW | 1.80 m | 78 kg | 10/21/1956 | 31 | Zarautz | ||
| | A. Ayarza | DF | 1.82 m | 79 kg | 9/12/1965 | 22 | Madrid | ||
| | E. Ayúcar | MF | 1.73 m | 67 kg | 2/21/1966 | 22 | Bilbao | ||
| | J. Vicente Biurrun | GK | 1.81 m | 79 kg | 9/1/1959 | 29 | São Paulo | ||
| | J. José Elgezabal | MF | 1.73 m | 71 kg | 12/21/1963 | 24 | Bakio | ||
| | E. Estíbariz | DF | 1.79 m | 71 kg | 5/27/1966 | 22 | Vitoria-Gasteiz | ||
| | L. Fernando Fernández | MF | 1.69 m | 66 kg | 9/3/1964 | 23 | Villafáfila | ||
| | F. Antonio Ferreira | DF | 1.80 m | 77 kg | 5/22/1967 | 21 | Saucelle | ||
| | J. Ramón Gallego | MF | 1.76 m | 75 kg | 8/7/1959 | 29 | Durango | ||
| | A. Garitano | MF | 1.74 m | 71 kg | 2/28/1969 | 19 | Derio | ||
| | F. Javier Iruarrizaga | GK | 1.82 m | 83 kg | 10/4/1962 | 25 | Areatza | ||
| | A. Lakabeg | DF | 1.73 m | 63 kg | 2/14/1969 | 19 | Bilbao | ||
| | I. Lizarralde | MF | 1.78 m | 76 kg | 8/6/1966 | 22 | Bilbao | ||
| | R. Martínez | FW | 1.75 m | 73 kg | 2/21/1966 | 22 | Pamplona | ||
| | R. Mendiguren | FW | 1.72 m | 67 kg | 10/19/1968 | 19 | Oñati | ||
| | M. Núñez | DF | 1.77 m | 72 kg | 1/21/1959 | 29 | Olivenza | ||
| | F. Quintanilla | DF | 1.84 m | 82 kg | 11/13/1964 | 23 | Barakaldo | ||
| | F. Salinas | DF | 1.85 m | 77 kg | 11/17/1963 | 24 | Bilbao | ||
| | F. Ángel Sarriugarte | FW | 1.74 m | 70 kg | 11/6/1964 | 23 | Durango | ||
| | P. Uralde | FW | 1.77 m | 72 kg | 3/2/1958 | 30 | Vitoria-Gasteiz | ||
| | J. Urrutia | MF | 1.76 m | 68 kg | 4/14/1968 | 20 | Lekeitio | ||
| | I. Urtubi | MF | 1.75 m | 72 kg | 5/24/1961 | 27 | Barakaldo |
