Player research cockpit

JanKumstat

TennisJack analysis

Jan Kumstat currently has a large TennisJack sample of 63 completed matches, with a 71.4% win rate in the loaded match history. The recent form line is 9-1 across the latest 10 completed matches.

Latest rank #186

Matches63Completed matches

Win rate71.4%Across all matches

Latest form9-1In latest 10 matches

Index statusStrong candidateProfile confidence

Performance metrics

Hold Base82.3%

Break Pressure28.4%

Latest form (10 matches)

9-1

W W W W W W W W W L

Surface profile

Clay

Canonical/players/jan-kumstat/

Index statusStrong candidate

Last updatedData from TennisJack

Profile intelligence

Ten signals worth watching.

Built from 63 completed TennisJack matches: form, surface, odds, pressure and close-set behavior. The full match log stays below for audit.

Player DNA

Quick fingerprint from starts, service base, return bite and decider exposure.

Strong starter Break-heavy player Stable server

Set 1 punch68.3%

Service shield82.3%

Return bite28.4%

Decider risk28.6%

Favorite / Underdog Split

How the player behaves when priced as market favorite versus outsider.

Favorite 75.0% 9-3 - 12 matches Avg odds 1.29 | 1+ set 75.0%

Underdog 36.4% 4-7 - 11 matches Avg odds 3.65 | 1+ set 63.6%

First Set Personality

Shows whether the player starts cleanly, breaks first, or survives early pressure.

Set 1 win68.3%

Breaks first S160.4%

Broken first S139.6%

Recovers S142.1%

Break Pressure Profile

Return damage versus service leakage, built from set-level break counters.

Avg breaks2.19

Avg broken1.37

Balance0.83

Clean service matches46.0%

3+ breaks produced49.2%

Set 2 win68.3%

Clean Win / Comeback Index

Separates smooth 2-0 wins from matches where the player had to repair damage.

62.2%Clean 2-0 share among wins

Clean 2-0 wins28

Comeback signals43

Lost set 1, won match6

Comeback index68.3%

Surface Edge

Where the profile is most trustworthy and where the win rate really travels.

Primary surfaceClay

Primary record34-5

Primary WR87.2%

Best surfaceClay 87.2%

Clay34-587.2%

Unknown6-554.5%

Hardcourt outdoor5-550.0%

Hardcourt indoor0-30.0%

Odds Value Pulse

Shows whether the player wins as expected or creates value at outsider prices.

Avg win odds1.71

Avg loss odds3.34

Biggest win odds3.50

2.00+ odds WR30.0%

2.00+ sample10

Odds sample23

Decider Profile

How often matches become complicated, and whether the player survives the third set.

Three-set share28.6%

Decider record11-7

Set 3 win61.1%

After losing S130.0%

Close Set Risk

Tie-break and 7-5 / 7-6 pressure profile, useful for spotting fragile edges.

Close sets50-20

Close-set WR71.4%

Tie-breaks14-8

Matches with tight set48

Momentum Trend

Compares the latest 5 matches with the previous 10 so form shifts are visible immediately.

Cooling down · 1 losses running

W W W W W W W W W L

Latest 5 WR80.0%

Previous 10 WR100.0%

Latest 54-1

Previous 1010-0

Trend delta-20.0%

Latest 5 WR80.0%

Match log

All Jan Kumstat matches in the TennisJack sample.

Scan date, tournament, surface, opponent, set score, result and service-return indicators before opening the deeper tools.

Open Player Research

Date	Match	Score	Result	Hold / Break
31.08.2026R32	Jan Kumstat vs Juan Pablo VarillasChallenger Como	4-6 3-6Clay	Loss	Hold 77.8% Break 0.0%
22.08.2026Final	Jan Kumstat vs Chun Hsin TsengChallenger Prague	5-7 6-3 6-0Clay	Win	Hold 84.6% Break 38.5%
21.08.2026SF	Jan Kumstat vs Filip Cristian JianuChallenger Prague	6-1 6-4Clay	Win	Hold 100.0% Break 37.5%
20.08.2026QF	Jan Kumstat vs Maxim MrvaChallenger Prague	6-1 7-5Clay	Win	Hold 88.9% Break 50.0%
19.08.2026R16	Jan Kumstat vs Sumit NagalChallenger Prague	7-5 6-3Clay	Win	Hold 80.0% Break 45.5%
18.08.2026R32	Jan Kumstat vs Petr BrunclikChallenger Prague	7-5 6-1Clay	Win	Hold 100.0% Break 33.3%
16.08.2026Final	Jan Kumstat vs Marvin MoellerChallenger Hamburg	4-6 7-6 7-5Clay	Win	Hold - Break -
15.08.2026SF	Jan Kumstat vs Matheus Pucinelli De AlmeidaChallenger Hamburg	6-4 5-7 6-2Clay	Win	Hold - Break -
13.08.2026R16	Jan Kumstat vs Max HoukesChallenger Hamburg	6-4 7-6Clay	Win	Hold - Break -
11.08.2026R32	Jan Kumstat vs Jamie MackenzieChallenger Hamburg	6-7 6-3 6-3Clay	Win	Hold - Break -
10.08.2026Round 19	Jan Kumstat vs Tom ZeuchChallenger Hamburg	3-6 7-6 6-3Clay	Win	Hold - Break -
09.08.2026Round 14	Jan Kumstat vs Alan WaznyChallenger Hamburg	6-2 7-6Clay	Win	Hold - Break -
02.08.2026Final	Jan Kumstat vs Gonzalo BuenoChallenger Liberec	6-3 6-1Clay	Win	Hold 100.0% Break 50.0%
01.08.2026SF	Jan Kumstat vs Sumit NagalChallenger Liberec	7-5 6-4Clay	Win	Hold 90.9% Break 20.0%
31.07.2026QF	Jan Kumstat vs Frederico Ferreira SilvaChallenger Liberec	6-4 7-5Clay	Win	Hold 100.0% Break 18.2%
29.07.2026R16	Jan Kumstat vs Thiago Seyboth WildChallenger Liberec	6-4 6-2Clay	Win	Hold 100.0% Break 33.3%
27.07.2026R32	Jan Kumstat vs Zdenek KolarChallenger Liberec	6-2 4-6 6-3Clay	Win	Hold 92.9% Break 23.1%
24.07.2026	Jan Kumstat vs Mathys ErhardM25 Ollersbach	6-1 6-7 2-6Surface pending	Loss	Hold 84.6% Break 20.0%
22.07.2026	Jan Kumstat vs Yuichiro InuiM25 Ollersbach	6-4 6-2Surface pending	Win	Hold 100.0% Break 33.3%
18.07.2026SF	Jan Kumstat vs Tom GentzschChallenger Bunschoten	5-7 4-6Clay	Loss	Hold 80.0% Break 9.1%
17.07.2026QF	Jan Kumstat vs Thijs BoogaardChallenger Bunschoten	6-1 6-1Clay	Win	Hold 85.7% Break 85.7%
16.07.2026R16	Jan Kumstat vs Florian BroskaChallenger Bunschoten	6-7 6-4 6-4Clay	Win	Hold 100.0% Break 11.8%
14.07.2026R32	Jan Kumstat vs Henri SquireChallenger Bunschoten	6-3 6-1Clay	Win	Hold 100.0% Break 50.0%
13.07.2026Round 19	Jan Kumstat vs Mateus AlvesChallenger Bunschoten	6-3 6-3Clay	Win	Hold 100.0% Break 33.3%
12.07.2026Round 14	Jan Kumstat vs Leo RaquilletChallenger Bunschoten	7-6 6-4Clay	Win	Hold 72.7% Break 33.3%
28.06.2026Round 14	Jan Kumstat vs Pavel LagutinChallenger Troyes	6-7 2-6Clay	Loss	Hold - Break -
23.06.2026	Jan Kumstat vs Duje MarkovinaM25 Zagreb	1-6 6-1 3-6Surface pending	Loss	Hold 72.7% Break 16.7%
18.06.2026	Jan Kumstat vs Kai WehneltM25 Klosters	3-6 2-6Surface pending	Loss	Hold 62.5% Break 0.0%
17.06.2026	Jan Kumstat vs Corentin DenollyM25 Klosters	6-4 7-6Surface pending	Win	Hold 90.9% Break 16.7%
13.06.2026	Jan Kumstat vs Georgii KravchenkoM25 Ceska Lipa	6-3 6-7 2-6Surface pending	Loss	Hold 86.7% Break 6.7%
12.06.2026	Jan Kumstat vs Marvin MoellerM25 Ceska Lipa	7-6 6-4Surface pending	Win	Hold 90.9% Break 16.7%
09.06.2026	Jan Kumstat vs Matteo CovatoM25 Ceska Lipa	6-4 6-3Clay	Win	Hold 100.0% Break 30.0%
02.06.2026R32	Jan Kumstat vs Vitaliy SachkoChallenger Prostejov	7-5 0-6 3-6Clay	Loss	Hold 53.9% Break 21.4%
01.06.2026Round 19	Jan Kumstat vs Oleg PrihodkoChallenger Prostejov	6-4 6-7 6-2Clay	Win	Hold 100.0% Break 18.8%
31.05.2026Round 14	Jan Kumstat vs Ji Sung NamChallenger Prostejov	6-4 6-4Clay	Win	Hold 88.9% Break 30.0%
30.03.2026	Jan Kumstat vs Henry SearleM15 Heraklion	2-6 2-6Surface pending	Loss	Hold 50.0% Break 0.0%
29.03.2026	Jan Kumstat vs Luca StaeheliM15 Heraklion	6-1 5-2Surface pending	Win	Hold 71.4% Break 85.7%
28.03.2026	Jan Kumstat vs Miles JonesM15 Heraklion	6-4 7-6Surface pending	Win	Hold 90.9% Break 16.7%
26.03.2026	Jan Kumstat vs Andrea ColomboM15 Heraklion	7-6 6-0Hardcourt outdoor	Win	Hold 100.0% Break 30.0%
27.02.2026	Jan Kumstat vs Harry WendelkenM25 Pszczyna	7-6 1-6 2-6Hardcourt indoor	Loss	Hold - Break -
17.02.2026	Jan Kumstat vs Henry BernetM25 Trento	2-6 3-6Hardcourt indoor	Loss	Hold 55.6% Break 0.0%
23.01.2026	Jan Kumstat vs Dimitris SakellaridisM15 Monastir	2-6 1-6Hardcourt outdoor	Loss	Hold 25.0% Break 14.3%
23.01.2026	Jan Kumstat vs Sergi Perez ContriM15 Monastir	7-5 6-1Surface pending	Win	Hold 90.0% Break 44.4%
22.01.2026	Jan Kumstat vs Maksim ShinM15 Monastir	6-1 6-4Hardcourt outdoor	Win	Hold - Break -
27.11.2025R16	Jan Kumstat vs Michael GeertsChallenger Athens	6-7 1-6Hardcourt outdoor	Loss	Hold 55.6% Break 18.2%
25.11.2025R32	Jan Kumstat vs Maks KasnikowskiChallenger Athens	7-5 4-6 6-1Hardcourt outdoor	Win	Hold 86.7% Break 28.6%
24.11.2025Round 19	Jan Kumstat vs Andrin CasanovaChallenger Athens	6-0 6-1Hardcourt outdoor	Win	Hold - Break -
11.11.2025R32	Jan Kumstat vs Yannick HanfmannChallenger Lyon	1-6 3-6Hardcourt indoor	Loss	Hold 37.5% Break 12.5%
05.11.2025	Jan Kumstat vs Tiago PereiraM25 Monastir	2-6 6-2 4-6Hardcourt outdoor	Loss	Hold 61.5% Break 30.8%
30.10.2025R16	Jan Kumstat vs Arthur GeaChallenger Monastir	3-6 4-6Hardcourt outdoor	Loss	Hold - Break -
28.10.2025R32	Jan Kumstat vs Aziz OuakaaChallenger Monastir	2-6 6-2 6-3Hardcourt outdoor	Win	Hold 84.6% Break 25.0%
01.10.2025	Jan Kumstat vs Markus MolderM15 Monastir	6-7 4-5Hardcourt outdoor	Loss	Hold - Break -
26.09.2025	Jan Kumstat vs Marvin MoellerITF M25 Pardubice	7-5 6-4Clay	Win	Hold 72.7% Break 45.5%
26.09.2025	Jan Kumstat vs Eric VanshelboimITF M25 Pardubice	6-4 6-4Clay	Win	Hold 90.0% Break 30.0%
24.09.2025	Jan Kumstat vs Martin DoskocilITF M25 Pardubice	6-4 6-2Clay	Win	Hold - Break -
09.08.2025	Jan Kumstat vs Andrea FiorentiniITF M15 Slovenska Bistrica	7-6 6-1Clay	Win	Hold 77.8% Break 40.0%
08.08.2025	Jan Kumstat vs Radovan MichalikITF M15 Slovenska Bistrica	6-2 6-4Clay	Win	Hold 100.0% Break 33.3%
07.08.2025	Jan Kumstat vs Vladan TadicITF M15 Slovenska Bistrica	6-2 6-2Clay	Win	Hold - Break -
06.08.2025	Jan Kumstat vs Patrik HomolaITF M15 Slovenska Bistrica	6-4 6-0Clay	Win	Hold - Break -
27.07.2025	Jan Kumstat vs Alexander WeisITF M15 Segrate	4-6 7-6 1-6Clay	Loss	Hold - Break -
25.07.2025	Jan Kumstat vs Lilian MarmousezITF M15 Segrate	7-5 7-6Clay	Win	Hold 83.3% Break 23.1%
24.07.2025	Jan Kumstat vs Gianmarco FerrariITF M15 Segrate	6-3 5-4Clay	Win	Hold 90.0% Break 33.3%
23.07.2025	Jan Kumstat vs Fausto TabaccoITF M15 Segrate	7-6 5-7 6-4Clay	Win	Hold 58.8% Break 38.9%