Colo Colo beat Club Nacional 4-0. Ricardo Dabrowski scored 2 goals.

1. 0'
   ⚽Kick-off
   CONMEBOL Libertadores 1991
   Referee: Ricardo Calabria📍 Monumental David ArellanoAttendance: 50,000
2. 1. First half
   2. 28'
      CHI
      GOOOAL!RMRubén Martínez
   3. 45'
      CHI
      GOOOAL!RDRicardo Dabrowski
3. 1. Second half
   2. 85'
      CHI
      GOOOAL!RDRicardo Dabrowski
   3. 89'
      CHI
      GOOOAL!RERubén Espinoza