Jason Kubler defeated Yoshihito Nishioka 6-1 6-1 in the USA F4 round of 16 on clay. The upset overturned the form book — Yoshihito Nishioka came in ranked #199, leading the head-to-head 2–1. Jason Kubler narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-01-07 | Sydney | Q1 | hard | Yoshihito Nishioka | 5-7 6-1 6-3 |
| 2019-01-05 | Sydney | Q16 | hard | Yoshihito Nishioka | 5-7 6-1 6-3 |
| 2011-10-24 | USA F28 | F | clay | Jason Kubler | 6-3 6-2 |
Averages over each player's completed matches in the selected window (200 vs 197). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About