Has there ever been a 11–0 in the Primera Argentina?

Yes, 4 times.

The first time: May 16, 1897, Flores Athletic beat Palermo Athletic (Flores Athletic 11–0 Palermo Athletic).

The last time: December 1, 1968, Vélez Sarsfield beat Huracán (Bahía Blanca) (Vélez Sarsfield 11–0 Huracán (Bahía Blanca)), 57 years ago.

Home wins: 4. Away wins: 0.

Nearby scores

1. 12–0 4 times
2. 12–1 1 time
3. 11–0 4 times
4. 11–1 3 times
5. 10–0 6 times
6. 10–1 7 times

All games

1. December 1, 1968 Vélez Sarsfield 11–0 Huracán (Bahía Blanca)
2. August 18, 1912 Quilmes 11–0 San Isidro
3. August 26, 1906 Reformer 11–0 Barracas Athletic
4. May 16, 1897 Flores Athletic 11–0 Palermo Athletic