Kazuki Nishiwaki defeated Leo Vithoontien 5-7 6-4 6-4 in the M25 Takasaki 1 round of 16 on hard. The upset overturned the form book — Leo Vithoontien came in ranked #690, leading the head-to-head 2–0, but Kazuki Nishiwaki had been the form player, winning 6 of their last 8 on hard. Kazuki Nishiwaki claimed a first win over Leo Vithoontien in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-04-23 | M15 Osaka 2 | R32 | hard | Leo Vithoontien | 6-3 2-6 6-4 |
| 2024-03-20 | M15 Nishi-Tokyo 1 | R32 | hard | Leo Vithoontien | 6-2 6-3 |
Averages over each player's completed matches in the selected window (5 vs 25). ATP, WTA & Challenger.
Vithoontien L.: 8 days rest · 1 match (14d). 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