| Olympic Games 2012 London - Appearances as Referee |  |
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| 26/07/2012 | Spain | - | Japan | 0:1 | 3 | - | 1 |
| 04/08/2012 | Japan | - | Egypt | 3:0 | 1 | - | 1 |
| Olympic Games 2012 London - Appearances as Referee | |
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| 26/07/2012 | Spain | - | Japan | 0:1 | 3 | - | 1 |
| 04/08/2012 | Japan | - | Egypt | 3:0 | 1 | - | 1 |
| Complete name: | Mark Geiger |
| Born: | 25/08/1974 |
| Place of birth: |
USA |
| Nationality: |
USA |