| 3. Liga 2019/2020 - Appearances as Referee |  |
 |
 |
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| 28/09/2019 | Eintracht Braunschweig | - | Hallescher FC | 1:1 | 4 | - | - |
| 08/02/2020 | TSV 1860 München | - | Waldhof Mannheim | 1:1 | 2 | - | - |
| 04/07/2020 | SV Meppen | - | Eintracht Braunschweig | 4:3 | 3 | - | - |
| Complete name: | Guido Winkmann |
| Born: | 27/11/1973 |
| Place of birth: |
Germany |
| Residence: | Kerken |
| Nationality: |
Germany |
| Profession: | Polizeibeamter |
| Club: | SV Nütterden |
| Height: | 180 cm |
| Weight: | 71 kg |
| Bundesliga (GER) appearances: | 161 |
