Louis Vosloo defeated Pieter Joubert 6-4 7-5 in the South Africa Masters 4 qualifying round on hard. The upset overturned the form book — Pieter Joubert came in leading the head-to-head 1–0, but Louis Vosloo had been the form player, winning 4 of their last 8 on hard. Louis Vosloo claimed a first win over Pieter Joubert in two meetings, levelling the head-to-head at 1–1.
Vosloo L. took it in straight sets.
Louis Vosloo beat Pieter Joubert 6-4 7-5. Umpiry, "Louis Vosloo vs Pieter Joubert — South Africa Masters 4 Qualifying Round", https://umpiry.com/match/1999-10-16/joubert-vs-vosloo-south-africa-masters-4-qf?utm_source=cite (as of 16 October 1999).