Andrei Stoliarov defeated Ivo Heuberger 3-6 6-4 6-4 in the Australian Open qualifying round of 128 on hard. The upset overturned the form book — Ivo Heuberger came in leading the head-to-head 1–0. Andrei Stoliarov claimed a first win over Ivo Heuberger in two meetings, levelling the head-to-head at 1–1.
Stoliarov A. came through in three sets.
Andrei Stoliarov beat Ivo Heuberger 3-6 6-4 6-4. Umpiry, "Andrei Stoliarov vs Ivo Heuberger — Australian Open Qualifying Round of 128", https://umpiry.com/match/2000-01-17/heuberger-vs-stoliarov-australian-open-q128?utm_source=cite (as of 17 January 2000).