Tomas Zib defeated Yong Il Yoon 6-3 6-1 in the Tokyo round of 64 on hard. The upset overturned the form book — Yong Il Yoon came in leading the head-to-head 1–0, defending last year's round of 16, but Tomas Zib had been the form player, winning 2 of their last 4 on hard. Tomas Zib claimed a first win over Yong Il Yoon in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-02-15 | Philippines Masters 1 | QF | hard | Yong Il Yoon | 6-4 6-1 |
Averages over each player's completed matches in the selected window (106 vs 3). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About