Jan Kumstat vs Ji Sung Nam — Prostejov

Prostejov · CHALLENGER
CZE
Jan Kumstat
#679ATP
19 yrs · Right-handed
Last 10
WLWLLWWWLL
1 — 0
Sets
Live · Set 2
Sunday, 31 May 2026 ·
clay
KOR
Ji Sung Nam
#768ATP
32 yrs · 183 cm · Right-handed
Last 10
LLWWLLLLWW

Umpiry Score

Pre-match
Kumstat J.
5.5
Slight disadvantageUmpiry ScorePartial · surface data limited
Nam J.
5.9
Even matchUmpiry ScorePartial · surface data limited
Form & Matchup
5.0No prior meetings
H2H
5.0No prior meetings
3.53 of last 10 on clay
Surface form
2.43 of last 10 on clay
Win streak
0.0Lost last 3
Fatigue & Travel
6.0Hard → Clay
Surface transition
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.

LiveSet 2
Kumstat J.
64
15
1
Nam J.
42
15
0

Conditions

Weather
21°CPartly cloudy
Wind 13 km/hHumidity 51%

Head to head

No previous meetings on record.

Statistics

Recent form
Kumstat J.Nam J.
50%1st serve in+8%58%
70%1st serve points won+2%68%
44%2nd serve points won+6%50%
56%Service points won+5%61%
39%Return points won+2%41%
50%Break points saved+3%53%
4.6Aces / match+1.72.9
3.4Double faults / match+1.12.3

Averages from each player's recent completed matches (14 vs 20). ATP, WTA & Challenger.

Draw