Seong Chan Hong defeated Yosuke Watanuki 7-5 6-4 in the Japan F4 qualifying round on hard. The upset overturned the form book — Yosuke Watanuki came in leading the head-to-head 3–0. Seong Chan Hong claimed a first win over Yosuke Watanuki in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-10-02 | Shanghai Masters | Q2 | hard | Yosuke Watanuki | 6-2 7-5 |
| 2023-07-03 | Wimbledon | Q1 | grass | Yosuke Watanuki | 7-6 7-6 |
| 2023-06-26 | Wimbledon | Q128 | grass | Yosuke Watanuki | 7-6(4) 7-6(7) |
Averages over each player's completed matches in the selected window (200 vs 198). ATP, WTA & Challenger.
Chan Hong S.: 3 days rest · 1 match, 17 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About