Most racedays with other riders
Riders sorted by the number of times they started in the same race as Josef Dumm.
| # | Rider | Number of races |
|---|---|---|
| 1 | KOHL Karl | 3 |
| 2 | WEYER Erwin | 3 |
| 3 | GEYER Ludwig | 2 |
| 4 | REMOLD Josef | 2 |
| 5 | BRANDES August | 2 |
| 6 | MANTHEY Felix | 2 |
| 7 | BUSE Hermann | 2 |
| 8 | BULLA Max | 2 |
| 9 | DAHMS Siegfried | 2 |
| 10 | EBELING Alfred | 2 |
| 11 | TIETZ Oskar | 2 |
| 12 | FEDER Richard | 2 |
| 13 | WOLKE Bruno | 2 |
| 14 | WOLKE Rudolf | 2 |
| 15 | USSAT Erich | 2 |
| 16 | SIEGEL Alfred | 2 |
| 17 | STÖPEL Kurt | 2 |
| 18 | TSCHUDI Karl | 1 |
| 19 | SCHMIDT Alfred | 1 |
| 20 | DAMM Willi | 1 |