Diego Veronelli defeated Juan Antonio Marin 6-4 6-2 in the Australian Open qualifying round of 128 on hard. The upset overturned the form book — Juan Antonio Marin came in leading the head-to-head 1–0. Diego Veronelli claimed a first win over Juan Antonio Marin in two meetings, levelling the head-to-head at 1–1.
Veronelli D. took it in straight sets.
Hard: Veronelli D. leads 1–0 · Clay: Marin J. leads 1–0
Diego Veronelli beat Juan Antonio Marin 6-4 6-2. Umpiry, "Diego Veronelli vs Juan Antonio Marin — Australian Open Qualifying Round of 128", https://umpiry.com/match/2004-01-19/marin-vs-veronelli-australian-open-q128?utm_source=cite (as of 19 January 2004).