Ivo Klec defeated Joseph Sirianni 6-3 6-3 in the Australian Open qualifying round of 128 on hard. The upset overturned the form book — Joseph Sirianni came in leading the head-to-head 1–0. Ivo Klec claimed a first win over Joseph Sirianni in two meetings, levelling the head-to-head at 1–1.
Klec I. took it in straight sets.
Ivo Klec beat Joseph Sirianni 6-3 6-3. Umpiry, "Ivo Klec vs Joseph Sirianni — Australian Open Qualifying Round of 128", https://umpiry.com/match/2006-01-12/klec-vs-sirianni-australian-open-q128?utm_source=cite (as of 12 January 2006).