Newell's Old Boys beat San Lorenzo 4-0. San Lorenzo played with ten from minute 17. Héctor Yazalde scored 2 goals.

1. 0'
   ⚽Kick-off
   Metropolitano 1978
   Referee: Roberto Osvaldo Barreiro.Attendance: 3,141
2. 1. First half
   2. 17'
      ARG
      Red card
      LULupo
   3. 35'
      ARG
      GOOOAL!HYHéctor Yazalde
3. 1. Second half
   2. 49'
      ARG
      GOOOAL!HYHéctor Yazalde
   3. 61'
      ARG
      GOOOAL!HMHéctor Eleuterio Montes
   4. 68'
      ARG
      GOOOAL!RARoque Alfaro