Boca Juniors beat San Lorenzo 4-0. San Lorenzo played with ten from minute 8.

1. 0'
   ⚽Kick-off
   Metropolitano 1981
   Referee: DucatelliAttendance: 18,534
2. 1. First half
   2. 8'
      ARG
      Red card
      HMHugo Moreno
   3. 10'
      ARG
      GOOOAL!OEOsvaldo S. Escudero
3. 1. Second half
   2. 73'
      ARG
      GOOOAL!JBJorge J. Benítez
   3. 82'
      ARG
      GOOOAL!MBMiguel Angel Brindisi
   4. 88'
      ARG
      GOOOAL!DMDiego Armando Maradona