| Europa League 1999/2000 - Appearances as Referee |  |
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| 08/12/1999 | SL Benfica | - | RC Celta | 1:1 | - | - | - |
| 15/03/2000 | Leeds United | - | Slavia Praha | 3:0 | - | - | 1 |
| Europa League 1999/2000 - Appearances as Referee | |
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|
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| 08/12/1999 | SL Benfica | - | RC Celta | 1:1 | - | - | - |
| 15/03/2000 | Leeds United | - | Slavia Praha | 3:0 | - | - | 1 |
| 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 |