Joanne Zuger defeated Yuki Naito 6-2 6-2 in the W25 Johannesburg / Markspark round of 32 on hard. The upset overturned the form book — Yuki Naito came in leading the head-to-head 3–0. Joanne Zuger claimed a first win over Yuki Naito in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-07-01 | W25 Biella | Q32 | clay | Yuki Naito | 6-2 6-3 |
| 2019-02-16 | W15 Antalya 5 | SF | clay | Yuki Naito | 6-2 1-6 6-3 |
| 2019-02-10 | W15 Antalya 4 | F | clay | Yuki Naito | 6-2 3-6 6-3 |
Averages over each player's completed matches in the selected window (26 vs 103). 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