| 2. Round | 07/10/1997 | Rayo Vallecano | - | CF Extremadura | 0:1 |  |
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| 2. Round | 28/10/1997 | CF Extremadura | - | Rayo Vallecano | 0:0 | ||||
| 3. Round | 02/12/1997 | CF Extremadura | - | UD Salamanca | 1:0 | ||||
| 3. Round | 07/01/1998 | UD Salamanca | - | CF Extremadura | 2:1 | |
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| Round of 16 | 14/01/1998 | CF Extremadura | - | Athletic Club | 2:0 | |
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| Round of 16 | 21/01/1998 | Athletic Club | - | CF Extremadura | 4:1 | |
Argentina