Yong Il Yoon defeated Vadim Kutsenko 7-6 6-3 in the Indonesia F4 qualifying round on hard. The upset overturned the form book — Vadim Kutsenko came in leading the head-to-head 1–0. Yong Il Yoon claimed a first win over Vadim Kutsenko in two meetings, levelling the head-to-head at 1–1.
Yoon Y. took it in straight sets.
Hard: Yoon Y. leads 1–0 · Clay: Kutsenko V. leads 1–0
Yong Il Yoon beat Vadim Kutsenko 7-6 6-3. Umpiry, "Yong Il Yoon vs Vadim Kutsenko — Indonesia F4 Qualifying Round", https://umpiry.com/match/1999-07-05/kutsenko-vs-yoon-indonesia-f4-qf?utm_source=cite (as of 5 July 1999).