Has there ever been a 6–5 in the Eredivisie?

Yes, 1 time.

The only time: May 14, 1983, Ajax beat Fortuna Sittard (Ajax 6–5 Fortuna Sittard).

Nearby scores

1. 7–4 6 times
2. 7–5 1 time
3. 7–6 Never
4. 6–4 8 times
5. 6–5 1 time
6. 6–6 1 time
7. 5–4 14 times
8. 5–5 6 times