Mark Nielsen defeated Michihisa Onoda 6-4 7-6 in the Japan F6 qualifying round on hard. The upset overturned the form book — Michihisa Onoda came in leading the head-to-head 1–0. Mark Nielsen claimed a first win over Michihisa Onoda in two meetings, levelling the head-to-head at 1–1.
Nielsen M. took it in straight sets.
Hard: Nielsen M. leads 1–0 · Carpet: Onoda M. leads 1–0
Mark Nielsen beat Michihisa Onoda 6-4 7-6(2). Umpiry, "Mark Nielsen vs Michihisa Onoda — Japan F6 Qualifying Round", https://umpiry.com/match/2004-08-30/nielsen-vs-onoda-japan-f6-qf?utm_source=cite (as of 30 August 2004).