De Graafschap played 88 league seasons and cup tournaments in the data, 1955 to 2026. Success weighs every finish by how hard that competition was to win; Efficiency is the share of what the club could have won that it did win; Edge compares that with an average participant (×1.00).
| 745 | Widzew Lódz (POL) | 2.9 |
| 746 | East Stirlingshire (Scotland) | 2.9 |
| 747 | Slaven Belupo Koprivnica (Croatia) | 2.9 |
| 748 | De Graafschap (Netherlands) | 2.9 |
| 749 | Stenhousemuir (Scotland) | 2.8 |
| 750 | Stormvogels (Netherlands) | 2.8 |
| 751 | Adanaspor (Turkey) | 2.8 |