Calais RUFC played 41 league seasons and cup tournaments in the data, 1921 to 2025. 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).
| 987 | América-RN (Brazil) | 1.6 |
| 988 | Guangzhou Evergrande (CHN) | 1.6 |
| 989 | Botafogo-PB (Brazil) | 1.6 |
| 990 | Calais RUFC (France) | 1.6 |
| 991 | Arsenal Kyiv (Ukraine) | 1.6 |
| 992 | VfR Neumünster (Germany) | 1.6 |
| 993 | Viktoria Köln (Germany) | 1.6 |
More: all clubs of France · the world top 200