Issei Okamura defeated Rio Noguchi 6-2 6-2 in the Vietnam F3 qualifying round on hard. The upset overturned the form book — Rio Noguchi came in ranked #213, leading the head-to-head 2–0. Issei Okamura claimed a first win over Rio Noguchi in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-06-09 | M25 Harmon 2 | R16 | hard | Rio Noguchi | 1-6 6-3 6-1 |
| 2018-04-30 | Vietnam F1 | R32 | hard | Rio Noguchi | 7-5 7-5 |
Averages over each player's completed matches in the selected window (178 vs 200). ATP, WTA & Challenger.
Noguchi R.: 4 days rest · 2 matches, 52 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