02 Jan 2007
Born
196 cm
Height
83 kg
Weight
right-handed
Plays
Prostejov, Czechia
Birthplace
$11,817
Prize money (season)
$32,854
Prize money (career)
Ranking trend
best #184Career record
28 matches24–4
Win–loss
—
Hard · 0–0
86%
Clay · 24–4
—
Grass · 0–0
2025
5 matches · 3–2 · 60.0%| Surface | M | W | Titles | Aces | DF | 1st serve | BP conv. | Winners | UE | TB |
|---|---|---|---|---|---|---|---|---|---|---|
| Red Clay | 5 | 3 | — | 12 | 21 | 56% | 38% | — | — | — |
2024
3 matches · 0–3 · 0.0%| Surface | M | W | Titles | Aces | DF | 1st serve | BP conv. | Winners | UE | TB |
|---|---|---|---|---|---|---|---|---|---|---|
| Red Clay | 3 | 0 | — | 6 | 13 | 62% | 20% | — | — | — |
M = matches · W = wins · DF = double faults · BP conv. = break points converted · UE = unforced errors · TB = tiebreaks won–lost.
FT
Como, Italy
clay
J. Varillas
J. Kumstat
(4)
6
4
6
3
2
0
FT
Prague, Czech Republic
clay
C. Tseng
J. Kumstat
7
5
3
6
0
6
1
2
FT
Prague, Czech Republic
clay
J. Kumstat
F. Jianu
6
1
6
4
2
0
FT
Prague, Czech Republic
clay
M. Mrva
J. Kumstat
1
6
5
7
0
2
FT
Prague, Czech Republic
clay
J. Kumstat
S. Nagal
(4)
7
5
6
3
2
0
FT
Prague, Czech Republic
clay
P. Brunclik
J. Kumstat
5
7
1
6
0
2
FT
Hamburg, Germany
clay
J. Kumstat
(Q)
M. Möller
(A)
4
6
7
6
7
5
2
1
FT
Hamburg, Germany
clay
M. Pucinelli de Almeida
J. Kumstat
(Q)
4
6
7
5
2
6
1
2
FT
Hamburg, Germany
clay
C. Taberner
J. Kumstat
(Q)
5
7
0
0
0
1
FT
Hamburg, Germany
clay
J. Kumstat
(Q)
M. Houkes
6
4
7
6
2
0
FT
Hamburg, Germany
clay
J. Mackenzie
(WC)
J. Kumstat
(Q)
7
6
3
6
3
6
1
2
FT
Hamburg, Germany
clay
J. Kumstat
(2)
T. Zeuch
(A)
3
6
7
6
6
3
2
1
FT
Hamburg, Germany
clay
J. Kumstat
A. Wazny
6
2
7
6
2
0
FT
Liberec, Czech Republic
clay
J. Kumstat
(WC)
G. Bueno
(2)
6
3
6
1
2
0
FT
Liberec, Czech Republic
clay
J. Kumstat
(WC)
S. Nagal
(7)
7
5
6
4
2
0
FT
Liberec, Czech Republic
clay
J. Kumstat
(WC)
F. Ferreira Silva
(8)
6
4
7
5
2
0
FT
Liberec, Czech Republic
clay
J. Kumstat
(WC)
T. Wild
6
4
6
2
2
0
FT
Liberec, Czech Republic
clay
Z. Kolar
(1)
J. Kumstat
(WC)
2
6
6
4
3
6
1
2
FT
ATP Challenger Bunschoten, Netherlands Men Singles
clay
T. Gentzsch
(5)
J. Kumstat
(Q)
7
5
6
4
2
0
FT
ATP Challenger Bunschoten, Netherlands Men Singles
clay
J. Kumstat
(Q)
T. Boogaard
(WC)
6
1
6
1
2
0