Most racedays with other riders
Riders sorted by the number of times they started in the same race as Herbert Sieronski.
| # | Rider | Number of races |
|---|---|---|
| 1 | GEYER Ludwig | 16 |
| 2 | DEMUYSERE Joseph | 11 |
| 3 | BULLA Max | 10 |
| 4 | REBRY Gaston | 9 |
| 5 | SCHEPERS Alfons | 9 |
| 6 | BUSE Hermann | 9 |
| 7 | STÖPEL Kurt | 9 |
| 8 | DELOOR Alfons | 8 |
| 9 | ARCHAMBAUD Maurice | 8 |
| 10 | KUTSCHBACH Willi | 8 |
| 11 | SPEICHER Georges | 7 |
| 12 | THIERBACH Oskar | 7 |
| 13 | BERNARD René | 7 |
| 14 | VERVAECKE Félicien | 7 |
| 15 | THALLINGER Karl | 7 |
| 16 | ALTENBURGER Karl | 7 |
| 17 | AERTS Jean | 7 |
| 18 | VERVAECKE Julien | 7 |
| 19 | GIJSSELS Romain | 7 |
| 20 | NITSCHKE Kurt | 7 |
| 21 | LOUYET Léon | 7 |
| 22 | BONDUEL Frans | 7 |
| 23 | LEDUCQ André | 6 |
| 24 | LAPÉBIE Roger | 6 |
| 25 | LOUVIOT Raymond | 6 |
| 26 | DECROIX Emile | 6 |
| 27 | TOMMIES Léon | 6 |
| 28 | LE CALVEZ Léon | 6 |
| 29 | MAES Sylvère | 6 |
| 30 | ANTENEN Georges | 6 |
| 31 | BIDOT Marcel | 6 |
| 32 | BUTTAFOCCHI Adrien | 6 |
| 33 | WAUTERS Jean | 6 |
| 34 | CAMUSSO Francesco | 6 |
| 35 | MAGNE Antonin | 6 |
| 36 | BATTESINI Fabio | 5 |
| 37 | VAN TRICHT Auguste | 5 |
| 38 | NEUHARD Ernest | 5 |
| 39 | GHISQUIÈRE Alfons | 5 |
| 40 | CORNEZ Fernand | 5 |
| 41 | HEIDE Karl | 5 |
| 42 | OLBÖTER Karl | 5 |
| 43 | JOLY Émile | 5 |
| 44 | WOLKE Rudolf | 5 |
| 45 | VAN RYSSELBERGHE Bernard | 5 |
| 46 | ROOSEMONT Leopold | 4 |
| 47 | MAUCLAIR Joseph | 4 |
| 48 | MOINEAU Julien | 4 |
| 49 | PÉGLION Louis | 4 |
| 50 | KOCH Karl | 4 |