 Complete the following phrase:  In the 198081 edition of the European Cup, Díaz scored both goals in a 20 home win against FC Spartak Moscow in the quarter-finals, after coming on as a substitute in the second half of the second leg, sealing the Merengues qualification 20 on aggregate. After the 198485 campaign, aged 31 and having just won the UEFA Cup  he did not appear in any of 