Same race results
Results in races where both riders started.
| # | Date | Race | Jan Westdorp | Daan de Groot | ||||
|---|---|---|---|---|---|---|---|---|
| 1 | 1961-05-25 | Ronde van Nederland | General classification | 11 | 6 | ||||
| 2 | 1961-05-22 | Ronde van Nederland | Stage 7 | 2 | 5 | ||||
| 3 | 1961-05-18 | Ronde van Nederland | Stage 3 | 2 | 3 | ||||
| 4 | 1957-05-01 | 4 Jours de Dunkerque / Tour du Nord-pas-de-Calais | General classification | 31 | 33 | ||||
| 5 | 1957-05-01 | 4 Jours de Dunkerque / Tour du Nord-pas-de-Calais | Stage 4 (ITT) | DF | DF | ||||
| 6 | 1957-04-30 | 4 Jours de Dunkerque / Tour du Nord-pas-de-Calais | Stage 3 | DF | DF | ||||
| 7 | 1957-04-29 | 4 Jours de Dunkerque / Tour du Nord-pas-de-Calais | Stage 2 | 5 | DF | ||||
| 8 | 1957-04-28 | 4 Jours de Dunkerque / Tour du Nord-pas-de-Calais | Stage 1 | DF | DF | ||||
| 4 |