Thiemo Maier defeated Peter Clarke 4-6 7-6 6-2 in the Australia F4 round of 32 on grass. The upset overturned the form book — Peter Clarke came in leading the head-to-head 1–0. Thiemo Maier claimed a first win over Peter Clarke in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-08-07 | Egypt F3 Cairo | R16 | clay | Peter Clarke | 7-6(1) 6-3 |