All available race results Antoon de Keyser
| Date | Race | Rank |
| 22/03 | Elfstedenronde | 27 |
| 05/04 | Ronde van Vlaanderen | 36 |
| Dwars door België | ||
| 19/04 | General Classification | 5 |
| Tour de Luxembourg | ||
| 31/05 | Stage 3b | 7 |
| 01/06 | General Classification | 9 |
Rider information for 1953
| Rank | 377 |
| Score | 84 |
| Name | Antoon DE KEYSER |
| Country | Belgium |
| Team | Groene Leeuw |
| Date | Race | Rank |
| 07/03 | Kuurne - Brussel - Kuurne | 13 |
| 28/03 | Gent - Wevelgem | 43 |
Rider information for 1954
| Rank | 924 |
| Score | 7 |
| Name | Antoon DE KEYSER |
| Country | Belgium |
| Team | Groene Leeuw - Huret |
| Date | Race | Rank |
| 13/03 | Elfstedenronde | 34 |
| 20/03 | Kuurne - Brussel - Kuurne | 11 |
| 27/04 | Nokere Koerse | 20 |
Rider information for 1955
| Rank | 1191 |
| Score | 3 |
| Name | Antoon DE KEYSER |
| Country | Belgium |
| Team | Bertin - Huret |
| Date | Race | Rank |
| 18/03 | Elfstedenronde | 14 |
Rider information for 1956
| Rank | 1354 |
| Score | 0 |
| Name | Antoon DE KEYSER |
| Country | Belgium |
| Team | Bertin - D'Alessandro |