| Champions League 2007/2008 - Appearances as Referee |  |
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 |
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| 03/10/2007 | Celtic FC | - | AC Milan | 2:1 | 5 | - | - |
| 06/11/2007 | Liverpool FC | - | Beşiktaş | 8:0 | 1 | - | - |
| 12/12/2007 | PSV Eindhoven | - | Inter | 0:1 | - | - | 1 |
| Champions League 2007/2008 - Appearances as Referee | |
|
|
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| 03/10/2007 | Celtic FC | - | AC Milan | 2:1 | 5 | - | - |
| 06/11/2007 | Liverpool FC | - | Beşiktaş | 8:0 | 1 | - | - |
| 12/12/2007 | PSV Eindhoven | - | Inter | 0:1 | - | - | 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 |