Chun Hsin Tseng advanced to the semifinals of the Prague quarterfinals by defeating Oleksii Krutykh with a score of 6-2, 6-4 on clay. Tseng hit one ace and did not commit a double fault, while Krutykh had no aces and four double faults. Tseng converted 67% of his break points and won 65% of his first-serve points, compared to Krutykh's 20% break point conversion and 59% first-serve win percentage.
No previous meetings on record.
Averages over each player's completed matches in the selected window (20 vs 22). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Toss-up · Too close to call
Calibrated model · 63% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.
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.
Krutykh O.: 1 day rest · 4 matches, 77 games (7d) · Hsin Tseng C.: 1 day rest · 2 matches, 44 games (7d). 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