Zhizhen Zhang defeated Jozef Kovalik 6-3 6-4 in the Luedenscheid CH semi-final on clay. Zhizhen Zhang extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-07-12 | Hamburg | Q1 | clay | Zhizhen Zhang | 6-4 6-4 |
| 2016-09-26 | Shenzhen | Q1 | hard | Jozef Kovalik | 7-6(7) 6-4 |
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
The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.
Zhang Z.: 1 day rest · 1 match, 21 games (7d) · Kovalik J.: 9 days rest · 1 match (14d). Higher means fresher. About