Antal Van Der Duim defeated Boy Westerhof 6-1 6-4 in the Netherlands F7 round of 16 on clay. The upset overturned the form book — Boy Westerhof came in leading the head-to-head 1–0. Antal Van Der Duim claimed a first win over Boy Westerhof in two meetings, levelling the head-to-head at 1–1.
Van Der Duim A. took it in straight sets.
Antal Van Der Duim beat Boy Westerhof 6-1 6-4. Umpiry, "Antal Van Der Duim vs Boy Westerhof — Netherlands F7 Round of 16", https://umpiry.com/match/2006-09-11/duim-vs-westerhof-netherlands-f7-r16?utm_source=cite (as of 11 September 2006).