Has there ever been a 10–1 in the Primera Argentina?

Yes, 7 times.

The first time: August 9, 1903, Lomas Athletic beat Flores Athletic (Flores Athletic 1–10 Lomas Athletic).

The last time: August 11, 1974, River Plate beat Huracán (San Rafael) (River Plate 10–1 Huracán (San Rafael)), 52 years ago.

Home wins: 4. Away wins: 3.

Nearby scores

1. 11–0 4 times
2. 11–1 3 times
3. 11–2 Never
4. 10–0 6 times
5. 10–1 7 times
6. 10–2 3 times
7. 9–0 12 times
8. 9–1 10 times
9. 9–2 5 times

All games

1. August 11, 1974 River Plate 10–1 Huracán (San Rafael)
2. September 5, 1943 Boca Juniors 10–1 Chacarita Juniors
3. April 5, 1914 Comercio 1–10 Huracán
4. September 7, 1913 San Isidro 10–1 Olivos
5. August 18, 1912 Belgrano Athletic 10–1 River Plate
6. October 17, 1909 Argentino de Quilmes 1–10 Estudiantes de Buenos Aires
7. August 9, 1903 Flores Athletic 1–10 Lomas Athletic