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First first participations
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When was the first participation of competing riders?
| # | Rider | Year |
|---|---|---|
| 1 | BLOEM J. | 1907 |
| 2 | TAMSE Henk | 1908 |
| 3 | SLOT Adrie | 1908 |
| 4 | DE VISSER Cornelis | 1908 |
| 5 | PEN Karel | 1908 |