San Lorenzo beat Platense 4-3. Luis A. Sanchez scored 2 goals.

1. 0'
   ⚽Kick-off
   Primera División 1931 (LAF)
   Referee: José Bartolomé MacíasAttendance: 14,200
2. 1. First half
   2. 13'
      ARG
      GOOOAL!SMSantiago Martin
   3. 23'
      ARG
      GOOOAL!AAArturo Arrieta
   4. 27'
      ARG
      GOOOAL!JFJose FossaPenalty
3. 1. Second half
   2. 49'
      ARG
      GOOOAL!NFNicolas Ferrara
   3. 54'
      ARG
      GOOOAL!LSLuis A. Sanchez
   4. 74'
      ARG
      GOOOAL!LCLuis Castanares
   5. 80'
      ARG
      GOOOAL!LSLuis A. Sanchez