Zdenek Kolar vs Jan Kumstat — Liberec Round of 32
CZE1
Kolar Z.Zdenek Kolar faces Jan Kumstat in the Liberec round of 32 on clay. Zdenek Kolar is the paper favourite — ranked #154 — but Jan Kumstat arrives in form, winning 7 of their last 9 on clay to Zdenek Kolar's 3.
Win Probability
Pre-match · updated 21:50 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.
Key context
- Freshness: Zdenek Kolar comes in with 5 days of rest and 46 games in 14d, vs Jan Kumstat's 7 and 126.
- Surface form: Zdenek Kolar 3 of 9, Jan Kumstat 7 of 9 on clay recently — Jan Kumstat the sharper of late.
Common opponents
Last 12 monthsUmpiry 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.
Statistics
This seasonAverages over each player's completed matches in the selected window (27 vs 2). ATP, WTA & Challenger.
Serve vs return
This seasonEach player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Freshness
Recent loadKolar Z.: 5 days rest · 1 match, 17 games (7d) · Kumstat J.: 7 days rest · 1 match, 22 games (7d). Higher means fresher. About
Head to head
No previous meetings on record.