| Copa del Rey 1999/2000 - Appearances as Referee |  |
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 |
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| 11/01/2000 | Villarreal CF | - | Barakaldo CF | 1:0 | 6 | - | - |
| Copa del Rey 1999/2000 - Appearances as Referee | |
|
|
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| 11/01/2000 | Villarreal CF | - | Barakaldo CF | 1:0 | 6 | - | - |
| Complete name: | Alberto Undiano Mallenco |
| Born: | 08/10/1973 |
| Place of birth: |
Pamplona, 
Spain |
| Residence: | Ansoain |
| Nationality: |
Spain |
| Height: | 181 cm |
| Weight: | 73 kg |