Lanús beat San Lorenzo 1-4. Jose Garcia scored 2 goals.

1. 0'
   ⚽Kick-off
   Primera División 1940
   Referee: Domingo Solari.
2. 1. First half
   2. 27'
      ARG
      GOOOAL!JGJose Garcia
   3. 35'
      ARG
      GOOOAL!RCRuben Cavadini
   4. 39'
      ARG
      GOOOAL!LALuis Eduardo Arrieta
3. 1. Second half
   2. 47'
      ARG
      GOOOAL!JGJose Garcia
   3. 86'
      ARG
      GOOOAL!ALAlberto Lorenzo