All available race results Alfred Siegel
| Date | Race | Rank |
| Großer Opel-Preis von Deutschland | ||
| 10/04 | Stage 2 | 4 |
| 09/10 | Stage 15 | 2 |
Rider information for 1927
| Rank | 406 |
| Score | 53 |
| Name | Alfred SIEGEL |
| Country | Germany |
| Team | Individual |
| Date | Race | Rank |
| 06/04 | Berlin - Cottbus - Berlin | 1 |
| Deutschlandrundfahrt | ||
| 06/05 | Stage 2 | 8 |
| 11/05 | Stage 4 | 1 |
| 13/05 | Stage 5 | 5 |
| 15/05 | Stage 6 | 4 |
| 20/05 | Stage 8 | 2 |
| 25/05 | General Classification | 6 |
| 15/06 | Harz Rundfahrt | 2 |
| Tour de France | ||
| 02/07 | Stage 1 | 2 |
| 03/07 | Stage 2 | 31 |
| 04/07 | Stage 3 | 9 |
| 05/07 | Stage 4 | 64 |
| 06/07 | Stage 5 | 6 |
| 07/07 | Stage 6 | 7 |
| 08/07 | Stage 7 | 19 |
| 09/07 | Stage 8 | 5 |
| 10/07 | Stage 9 | 44 |
| 12/07 | Stage 10 | 57 |
| 14/07 | Stage 11 | 10 |
| 15/07 | Stage 12 | 40 |
| 16/07 | Stage 13 | 4 |
| 17/07 | Stage 14 | 63 |
| 19/07 | Stage 15 | 22 |
| 21/07 | Stage 16 | 46 |
| 23/07 | Stage 17 | 24 |
| 24/07 | Stage 18 | 4 |
| 25/07 | Stage 19 | 49 |
| 26/07 | Stage 20 | 5 |
| 27/07 | Stage 21 | 7 |
| General Classification | 33 |
Rider information for 1930
| Rank | 43 |
| Score | 764 |
| Name | Alfred SIEGEL |
| Country | Germany |
| Team | Brennabor |
| Date | Race | Rank |
| Deutschlandrundfahrt | ||
| 06/05 | Stage 3 | 4 |
| 09/05 | Stage 5 | 6 |
| 14/05 | Stage 9 | 5 |
| 17/05 | Stage 11 | 5 |
| 20/05 | Stage 13 | 8 |
| 24/05 | Stage 16 | 6 |
| 24/05 | General Classification | 20 |
| Tour de France | ||
| 30/06 | Stage 1 | 42 |
| 01/07 | Stage 2 | 16 |
| 02/07 | Stage 3 | 10 |
| 03/07 | Stage 4 | 12 |
| 04/07 | Stage 5 | 6 |
| 05/07 | Stage 6 | 5 |
| 06/07 | Stage 7 | 35 |
| 07/07 | Stage 8 | 38 |
| 08/07 | Stage 9 | 36 |
| 10/07 | Stage 10 | 7 |
| 12/07 | Stage 11 | 9 |
| 13/07 | Stage 12 | 21 |
| 14/07 | Stage 13 | 22 |
| 15/07 | Stage 14 | 44 |
| 17/07 | Stage 15 | 42 |
| 18/07 | Stage 16 | 24 |
| 19/07 | Stage 17 | 43 |
| 20/07 | Stage 18 | 7 |
| 21/07 | Stage 19 | 13 |
| 22/07 | Stage 20 | 21 |
| 23/07 | Stage 21 | 7 |
| 24/07 | Stage 22 | 7 |
| 25/07 | Stage 23 | 14 |
| 26/07 | Stage 24 | 17 |
| General Classification | 23 |
Rider information for 1931
| Rank | 39 |
| Score | 896 |
| Name | Alfred SIEGEL |
| Country | Germany |
| Team | Opel - Torpedo |
| Date | Race | Rank |
| Circuit du Morbihan | ||
| 06/05 | Stage 1 | 12 |
| 07/08 | Tour du Lac Léman | 3 |
Rider information for 1933
| Rank | 560 |
| Score | 25 |
| Name | Alfred SIEGEL |
| Country | Germany |
| Team | Individual |