Peter Lucassen defeated Boy Westerhof 4-6 7-6 7-5 in the Netherlands F2 round of 16 on clay. The upset overturned the form book — Boy Westerhof came in leading the head-to-head 1–0, but Peter Lucassen had been the form player, winning 2 of their last 4 on clay. Peter Lucassen claimed a first win over Boy Westerhof in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-06-12 | Netherlands F1 | R32 | clay | Boy Westerhof | 3-6 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.