Constant Lestienne defeated Sergiy Stakhovsky 3-6 6-2 6-1 in the Portoroz CH quarter-final on hard. The upset overturned the form book — Sergiy Stakhovsky came in leading the head-to-head 2–1, defending the title, but Constant Lestienne had been the form player, winning 1 of their last 4 on hard. Constant Lestienne narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-02-18 | Marseille | Q2 | hard | Constant Lestienne | 7-5 1-6 7-5 |
| 2019-02-18 | Marseille | R32 | hard | Sergiy Stakhovsky | 7-6(3) 1-6 6-3 |
| 2018-05-28 | Roland Garros | Q2 | clay | Sergiy Stakhovsky | 6-7(7) 7-5 6-2 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About