| Europa League 1973/1974 - Appearances as Referee |  |
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 |
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| 18/09/1973 | Union Luxembourg | - | Olympique Marseille | 0:5 | - | - | - |
| 03/10/1973 | FC Sion | - | Lazio Roma | 3:1 | 1 | - | - |
| 19/12/1973 | Feyenoord | - | Standard Liège | 2:0 | 3 | - | - |
| Europa League 1973/1974 - Appearances as Referee | |
|
|
||||
| 18/09/1973 | Union Luxembourg | - | Olympique Marseille | 0:5 | - | - | - |
| 03/10/1973 | FC Sion | - | Lazio Roma | 3:1 | 1 | - | - |
| 19/12/1973 | Feyenoord | - | Standard Liège | 2:0 | 3 | - | - |
| Complete name: | Ferdinand Biwersi |
| Born: | 24/06/1934 † 04/09/2013 |
| Place of birth: |
Bliesransbach, 
Germany |
| Residence: | Saarbrücken |
| Nationality: |
Germany |
| Bundesliga (GER) appearances: | 120 |