Lanús beat Boca Juniors 5-2. Crispin Rios scored 2 goals.

1. 0'
   ⚽Kick-off
   Primera División 1931 (LAF)
   Referee: Ricardo Riestra📍 San Lorenzo de AlmagroAttendance: 6,000
2. 1. First half
   2. 10'
      ARG
      GOOOAL!AMAngel Montero
   3. 11'
      ARG
      GOOOAL!ABAlberto Bussi
   4. 43'
      ARG
      GOOOAL!AUAguedo Ursino
3. 1. Second half
   2. 46'
      ARG
      GOOOAL!AAAntonio Alberino
   3. 48'
      ARG
      GOOOAL!FVFrancisco Antonio Varallo
   4. 75'
      ARG
      GOOOAL!CRCrispin Rios
   5. 81'
      ARG
      GOOOAL!CRCrispin Rios