Vélez Sarsfield beat San Lorenzo 4-3. Oscar de Dovitis scored 2 goals.

1. 0'
   ⚽Kick-off
   Primera División 1931 (LAF)
   Referee: Arturo LegnazziAttendance: 11,100
2. 1. First half
   2. 3'
      ARG
      GOOOAL!ODOscar de Dovitis
   3. 5'
      ARG
      GOOOAL!JGJose M. Galindez
   4. 28'
      ARG
      GOOOAL!JCJose B. Cortecci
   5. 35'
      ARG
      GOOOAL!JGJose M. Galindez
3. 1. Second half
   2. 54'
      ARG
      GOOOAL!ASAngel Sobrino
   3. 67'
      ARG
      GOOOAL!LULupo
   4. 72'
      ARG
      GOOOAL!ODOscar de Dovitis