Info
| Last name | Tummers |
| First name | Jan |
| Nationality |  Netherlands |
| Date of birth | 08-04-1942 |
| Age | 83 |
| Place of birth | Geulle |
| Date | Rank | Race | |||||
|---|---|---|---|---|---|---|---|
| 28-07 | 4 | National Road Championships - Netherlands (CN) | |||||
 Tour de Suisse (2.1) | |||||||
| 12 |  Standings | ||||||
| 24-06 | Stage 7bBrugg - Zürich (48.0km) | ||||||
 Giro d'Italia (2.HC) | |||||||
| 30-05 | 8 | Stage 11Potenza - Salerno (160.0km) | |||||
| 25-05 | 8 | Stage 6Palermo - Palermo (63.0km) | |||||
| 15-04 | 10 | Amstel Gold Race (CDM) | |||||
| 18-03 | 66 | Milano-Sanremo (CDM) | |||||
 Paris - Nice (2.1) | |||||||
| 34 | Standings | ||||||
| 15-03 | Stage 8Antibes - Nice (28.0km) | ||||||
Teams
| Year | Team |
|---|---|
| 1969 | Willem II - Gazelle |
| 1968 | Willem II - Gazelle |
| 1967 | Willem II - Gazelle / Cynar |
Victories
| This year | 0 |
| Total | 0 |