| DFB-Pokal 2020/2021 - Appearances as Referee |  |
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| 23/12/2020 | VfL Wolfsburg | - | SV Sandhausen | 4:0 | 5 | - | - |
| 02/02/2021 | Werder Bremen | - | SpVgg Greuther Fürth | 2:0 | 4 | - | - |
| 07/04/2021 | Jahn Regensburg | - | Werder Bremen | 0:1 | 2 | - | - |
| DFB-Pokal 2020/2021 - Appearances as Referee | |
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| 23/12/2020 | VfL Wolfsburg | - | SV Sandhausen | 4:0 | 5 | - | - |
| 02/02/2021 | Werder Bremen | - | SpVgg Greuther Fürth | 2:0 | 4 | - | - |
| 07/04/2021 | Jahn Regensburg | - | Werder Bremen | 0:1 | 2 | - | - |
| 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 |