Tony Holzinger defeated Mariano Albert Ferrando 5-7 6-3 7-5 in the Spain F21 semi-final on clay. The upset overturned the form book — Mariano Albert Ferrando came in leading the head-to-head 1–0. Tony Holzinger claimed a first win over Mariano Albert Ferrando in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-29 | Spain F17 | R32 | clay | Mariano Albert Ferrando | 7-6(7) 6-3 |