| Europa League 1997/1998 - Appearances as Referee |  |
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 |
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| 29/09/1997 | Lazio Roma | - | Vitória Guimarães | 2:1 | 1 | - | 1 |
| 08/12/1997 | Atlético Madrid | - | Croatia Zagreb | 1:0 | - | - | - |
| 30/03/1998 | Inter | - | Spartak Moskva | 2:1 | 3 | - | - |
| Europa League 1997/1998 - Appearances as Referee | |
|
|
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| 29/09/1997 | Lazio Roma | - | Vitória Guimarães | 2:1 | 1 | - | 1 |
| 08/12/1997 | Atlético Madrid | - | Croatia Zagreb | 1:0 | - | - | - |
| 30/03/1998 | Inter | - | Spartak Moskva | 2:1 | 3 | - | - |
| Complete name: | Dr. Markus Merk |
| Born: | 15/03/1962 |
| Place of birth: |
Kaiserslautern, 
Germany |
| Residence: | Kaiserslautern |
| Nationality: |
Germany |
| Height: | 181 cm |
| Weight: | 69 kg |
| Bundesliga (GER) appearances: | 338 |