Estudiantes de La Plata beat Lanús 0-1. Lanús played with ten from minute 45.

1. 0'
   ⚽Kick-off
   Primera División 1990/91
   Referee: DellacasaAttendance: 1,201
2. 1. First half
   2. 45'
      ARG
      Red card
      ALAlonso
3. 1. Second half
   2. 61'
      ARG
      GOOOAL!LULuna