Maxim Mrva vs Jan Kumstat — Prague Quarter-final

Prague · CHALLENGER · Quarter-final

CZE

Maxim Mrva

#309ATP

1500ELO

1447Clay ELO

19 yrs

Last 10

WWWWWWWLWW

—

Sets

Thursday, 20 August 2026 · 13:00

clay

CENTER COURT · 4th on

CZESE

Jan Kumstat

#347ATP

19 yrs · Right-handed

Last 10

WWWWWWWWWW

Mrva M.

Kumstat J.

Maxim Mrva faces Jan Kumstat in the Prague quarter-final on clay. Maxim Mrva holds the paper edge — ranked #309, leading the head-to-head 1–0. Recent clay form is closely matched.

Win Probability

Pre-match · updated 21:50 UTC

Mrva M.52%

Kumstat J.48%

Toss-up
50–58%

Slight edge
58–67%

Clear favourite
67–80%

Strong favourite
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: Maxim Mrva comes in with 1 days of rest and 149 games in 14d, vs Jan Kumstat's 1 and 202.
Last match: Maxim Mrva dropped just 3 games past Cezar Cretu.
Win streak: Both arrive in form — Maxim Mrva on a 7-match run, Jan Kumstat on 14.

Common opponents

Last 12 months

No common opponents in the last 12 months.

Includes tour-level, 125s, qualifying and team events (⚑). Walkovers excluded. Describes past results in different contexts — not a prediction.

Umpiry Score

Pre-match

Mrva M.

6.0

Even matchUmpiry ScorePartial · surface data limited

Back-to-back day (−0.5)

Kumstat J.

5.9

Even matchUmpiry ScorePartial · surface data limited

Back-to-back day (−0.5)

Form & Matchup

7.0Leads 1–0 on clay

H2H

3.0Trails 0–1 on clay

9.39 of last 10 on clay

Surface form

10.010 of last 10 on clay

9.07-match win streak

Win streak

10.014-match win streak

Fatigue & Travel

0.03 three-setters in 14 days

3-set count

0.04 three-setters in 14 days

Context

5.0Didn't play here last year

Defending pts

5.0Didn't play here last year

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.

20 vs 10 matches

Statistics

This season

Mrva M.Kumstat J.

1st serve in·Even

57%

56%

1st serve points won·Slight edge

63%

72%

2nd serve points won·Slight edge

47%

58%

Service points won·Slight edge

56%

66%

Return points won·Slight edge

44%

39%

Break points saved·Slight edge

51%

40%

Aces / match·Dominant

2.6

6.7

Double faults / match·Dominant

3.6

2.1

Averages over each player's completed matches in the selected window (20 vs 10). ATP, WTA & Challenger.

Serve vs return

This season

Mrva M.serving60% hold

wins 54% of points on serve vs Kumstat J.

Kumstat J.serving69% hold

wins 58% of points on serve vs Mrva M.

Baseline battle — serve is shaky, expect plenty of breaks

Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About

Freshness

Recent load

Mrva M.Kumstat J.

Freshness·Slight edge

Mrva M.: 1 day rest · 5 matches, 102 games (7d) · Kumstat J.: 1 day rest · 5 matches, 119 games (7d). Higher means fresher. About

Conditions

Court speed

Slowlow bounce, long rallies

SlowFast

Weather forecast

26°COvercast

Wind 14 km/hHumidity 51%

Head to head

1–0

Date	Tournament	Round	Surface	Winner	Score
2025-04-15	M15 Antalya 11	R32	clay	Maxim Mrva	6-3 6-1