Jan Kumstat vs Frederico Ferreira Silva — Liberec Quarter-final
Kumstat J.
Jan Kumstat defeated Frederico Ferreira Silva in the quarterfinals of the Liberec tournament on clay, winning 6-4, 7-5. Kumstat hit 9 aces to Ferreira Silva's 2 and converted 29% of break points, while Ferreira Silva did not convert any. Kumstat won 82% of first-serve points to Ferreira Silva's 71%, and he broke Ferreira Silva's serve twice.
Key context
- Match story: Jan Kumstat edged Frederico Ferreira Silva in two tight sets (6–4 7–5).
Head to head
No previous meetings on record.
Statistics
This seasonAverages over each player's completed matches in the selected window (10 vs 32). ATP, WTA & Challenger.
Win Probability
Pre-match · updated 08:50 UTC50–58%
58–67%
67–80%
80%+
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.
Umpiry Score
Pre-matchThe Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.
Freshness
Recent loadKumstat J.: 1 day rest · 5 matches, 119 games (7d) · Ferreira Silva F.: 19 days rest. Higher means fresher. About