Philipp Mullner defeated Thomas Strengberger S597 6-1 7-6 in the South Africa 2 Masters 2 round of 32 on hard. The upset overturned the form book — Thomas Strengberger S597 came in leading the head-to-head 1–0. Philipp Mullner claimed a first win over Thomas Strengberger S597 in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-07-12 | Austria F2 | SF | clay | Thomas Strengberger S597 | 6-3 6-2 |