| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Felix Brych | 29 | 4 | - | - | 7.25 |
| Deniz Aytekin | 23 | 3 | - | - | 7.67 |
| Frank Willenborg | 3 | 2 | - | - | 1.5 |
| Tobias Welz | 9 | 2 | - | - | 4.5 |
| Marco Fritz | 21 | 2 | - | - | 10.5 |
| Manuel Grafe | 32 | 2 | - | - | 16 |
| Jesus Gil Manzano | 1 | 1 | - | - | 1 |
| Martin Atkinson | 1 | 1 | - | - | 1 |
| Daniel Stefanski | 1 | 1 | - | - | 1 |
| Serdar Gozubuyuk | 2 | 1 | - | - | 2 |
| Pedro Proenca | 2 | 1 | - | - | 2 |
| William Collum | 2 | 1 | - | - | 2 |
| Ovidiu Hategan | 2 | 1 | - | - | 2 |
| Viktor Kassai | 4 | 1 | - | - | 4 |
| Cuneyt Cakir | 5 | 1 | - | - | 5 |
| Bjorn Kuipers | 5 | 1 | - | - | 5 |
| Babak Rafati | 7 | 1 | - | - | 7 |
| Guido Winkmann | 8 | 1 | - | - | 8 |
| Christian Dingert | 10 | 1 | - | - | 10 |
| Knut Kircher | 13 | 1 | - | - | 13 |
| Daniel Siebert | 15 | 1 | - | - | 15 |
| Tobias Stieler | 16 | 1 | - | - | 16 |
| Gunther Perl | 18 | 1 | - | - | 18 |
| Peter Gagelman | 20 | 1 | - | - | 20 |
P = Matches played,
C = Cards .