San Isidro played 25 league seasons and cup tournaments in the data, 1906 to 1930. 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).
| 702 | Walsall (England) | 3.2 |
| 703 | Belgrano Athletic (Argentina) | 3.2 |
| 704 | RFC Seraing (Belgium) | 3.2 |
| 705 | San Isidro (Argentina) | 3.2 |
| 706 | Livingston (Scotland) | 3.2 |
| 707 | FC Mulhouse (France) | 3.2 |
| 708 | Terek Grozny (Russia) | 3.2 |