Biggest races where rider never competed
Major races where Oscar Mason never competed in.
| # | Race | Class |
|---|---|---|
| 1 | Tour de France | 2.PT |
| 2 | World Championships ME - Road Race | WC |
| 3 | Paris - Roubaix | 1.HC |
| 4 | Paris - Nice | 2.UWT |
| 5 | Ronde van Vlaanderen / Tour des Flandres ME | PT |
| 6 | Paris - Tours | 1.HC |
| 7 | Gent - Wevelgem | PT |
| 8 | Amstel Gold Race | 1.HC |
| 9 | Paris-Bruxelles | 1.HC |
| 10 | Omloop Het Nieuwsblad ME | 1.HC |
| 11 | Giro dell'Emilia | 1.HC |
| 12 | E3 Prijs Vlaanderen | 1.HC |
| 13 | Tour of Belgium | 2.1 |
| 14 | 4 Jours de Dunkerque - Tour du Nord-Pas-de-Calais | 2.HC |
| 15 | Kuurne-Brussel-Kuurne | 1.1 |
| 16 | Driedaagse De Panne-Koksijde | 2.HC |
| 17 | Trofeo Laigueglia | 1.1 |
| 18 | Vuelta a Andalucia Ruta ciclista del Sol | 2.1 |
| 19 | Dwars door Vlaanderen | 1.1 |
| 20 | Škoda-Tour de Luxembourg | 2.HC |
| 21 | Vuelta Ciclista a la Comunidad Valenciana | 2.1 |
| 22 | Gran Piemonte | 1.HC |
| 23 | De Brabantse Pijl - La Flèche Brabançonne | 1.1 |
| 24 | GP du Midi-Libre | 2.1 |
| 25 | Vattenfall Cyclassics | PT |