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US OpenGuadalajaraSao PauloChengdu

Jan Kumstat

Czech 186 ATP rankingATP 302 points 19 years Right handed

Match log

2026

Como, challengerAugust
R32LJuan Pablo Varillas4-6 3-6
Prague, challengerWon the titleAugust
FWChun Hsin Tseng5-7 6-3 6-0Won the title
SFWFilip Cristian Jianu6-1 6-4
QFWMaxim Mrva6-1 7-5
R16WSumit Nagal7-5 6-3
R32WPetr Brunclik7-5 6-1
Hamburg, challengerWon the titleAugust
FWMarvin Moeller4-6 7-6(5) 7-5Won the title
SFWMatheus Pucinelli De Almeida6-4 5-7 6-2
QFWCarlos Taberner7-5 RET
R16WMax Houkes6-4 7-6(4)
R32WJamie Mackenzie6-7(5) 6-3 6-3
Liberec, challengerWon the titleJuly
FWGonzalo Bueno6-3 6-1Won the title
SFWSumit Nagal7-5 6-4
QFWFrederico Ferreira Silva6-4 7-5
R16WThiago Seyboth Wild6-4 6-2
R32WZdenek Kolar6-2 4-6 6-3
Bunschoten, challengerJuly
SFLTom Gentzsch5-7 4-6
QFWThijs Boogaard6-1 6-1
R16WFlorian Broska6-7(5) 6-4 6-4
R32WHenri Squire6-3 6-1
Prostejov CH, challengerClay, June
R32LVitaliy Sachko7-5 0-6 3-6
Q2WOleg Prihodko6-4 6-7(10) 6-2
Q1WJi Sung Nam6-4 6-4

2025

Athens CH, challengerHard, November
R16LMichael Geerts6-7(2) 1-6
R32WMaks Kasnikowski7-5 4-6 6-1
Q2WAndrin Casanova6-0 6-1
Lyon CH, challengerHard, November
R32LYannick Hanfmann1-6 3-6
Monastir CH, challengerHard, October
R16LArthur Gea3-6 4-6
R32WAziz Ouakaa2-6 6-2 6-3
Prague CH, challengerClay, May
R32LFilip Misolic4-6 5-7
Q2WAlex Martinez6-4 1-6 6-4
Q1WHenri Squire5-7 7-6(5) 6-1
Ostrava CH, challengerClay, April
R16LZsombor Piros3-6 3-6
R32WMurphy Cassone6-4 7-6(3)

2024

Liberec CH, challengerClay, July
R32LJerome Kym3-6 0-6
Prague CH, challengerClay, May
R32LJaime Faria4-6 2-6
Ostrava CH, challengerClay, April
R32LTimofey Skatov1-6 2-6

2023

Prostejov CH, challengerClay, June
Q1LMate Valkusz4-6 2-6

2022

Bratislava CH, challengerHard, November
Q1LHamad Medjedovic1-6 4-6