Jan Kumstat
J. Kumstat · Czech Republic
Every match we have on file, with the price the market gave them at the time.
Last five
WLLLW
2026 record
39-17
Hard 12-10 · Clay 27-7
Average price
1.77
Match history
| Date | Event | Opponent | Score | Their price | Market | Result |
|---|---|---|---|---|---|---|
| 2026-11-02 | Taipei | J. J. Schwaerzler | 2.05 | 53% | WON | |
Games in each set7-5 3-6 7-6 KumstatSchwaerzlerPoints won50%50%Serve points won68%70%Return points won30%32%Games held15 of 1616 of 17Break points saved10 of 114 of 5Aces1413Double faults34 | ||||||
| 2026-10-27 | Seoul | S. Shimabukuro | 2.21 | 56% | LOST | |
Games in each set4-6 0-6 KumstatShimabukuroPoints won43%57%Serve points won53%67%Return points won33%47%Games held4 of 88 of 8Break points saved4 of 80 of 0Aces54Double faults41 | ||||||
| 2026-10-18 | Lyon (France) - Qualification | M. Mmoh | 1.93 | 50% | LOST | |
Games in each set1-6 7-6 3-6 KumstatMmohPoints won42%58%Serve points won61%76%Return points won24%39%Games held10 of 1315 of 15Break points saved3 of 62 of 2Aces1113Double faults25 | ||||||
| 2026-10-15 | Olbia | J. Fearnley | 2.95 | 67% | LOST | |
Games in each set4-6 3-6 KumstatFearnleyPoints won43%57%Serve points won53%74%Return points won26%47%Games held6 of 108 of 9Break points saved5 of 92 of 3Aces24Double faults03 | ||||||
| 2026-10-12 | Olbia | E. Butvilas | 2.40 | 60% | WON | |
Games in each set7-6 7-6 KumstatButvilasPoints won52%48%Serve points won71%68%Return points won32%29%Games held11 of 1211 of 12Break points saved3 of 43 of 4Aces77Double faults32 | ||||||
| 2026-08-31 | Como | J. P. Varillas | 1.35 | 71% | LOST | |
Games in each set4-6 3-6 KumstatVarillasPoints won42%58%Serve points won61%77%Return points won23%39%Games held7 of 910 of 10Break points saved3 of 51 of 1Aces43Double faults30 | ||||||
| 2026-08-22 | Prague | C. H. Tseng | 1.44 | 67% | WON | |
Games in each set5-7 6-3 6-0 KumstatTsengPoints won58%42%Serve points won72%54%Return points won46%28%Games held12 of 148 of 13Break points saved3 of 57 of 12Aces32Double faults27 | ||||||
| 2026-08-21 | Prague | F. C. Jianu | 1.33 | 73% | WON | |
Games in each set6-1 6-4 KumstatJianuPoints won64%36%Serve points won90%59%Return points won41%10%Games held9 of 95 of 8Break points saved0 of 03 of 6Aces62Double faults01 | ||||||
| 2026-08-20 | Prague | M. Mrva | 1.88 | 51% | WON | |
Games in each set6-1 7-5 KumstatMrvaPoints won60%40%Serve points won71%48%Return points won52%29%Games held8 of 95 of 10Break points saved1 of 20 of 5Aces34Double faults07 | ||||||
| 2026-08-19 | Prague | S. Nagal | 1.51 | 64% | WON | |
Games in each set7-5 6-3 KumstatNagalPoints won56%44%Serve points won62%52%Return points won48%38%Games held8 of 106 of 11Break points saved7 of 96 of 11Aces61Double faults43 | ||||||
| 2026-08-18 | Prague | P. Brunclik | 1.67 | 57% | WON | |
Games in each set7-5 6-1 KumstatBrunclikPoints won58%42%Serve points won71%60%Return points won40%29%Games held10 of 106 of 9Break points saved7 of 72 of 5Aces106Double faults46 | ||||||
| 2026-08-16 | Hamburg | M. Moeller | 1.53 | 62% | WON | |
Games in each set4-6 7-6 7-5 KumstatMoellerPoints won51%49%Serve points won69%68%Return points won32%31%Games held16 of 1716 of 17Break points saved8 of 96 of 7Aces206Double faults22 | ||||||
| 2026-08-15 | Hamburg | M. Pucinelli de Almeida | 1.53 | 63% | WON | |
Games in each set6-4 5-7 6-2 KumstatAlmeidaPoints won52%48%Serve points won67%60%Return points won40%33%Games held13 of 1511 of 15Break points saved6 of 84 of 8Aces34Double faults35 | ||||||
| 2026-08-14 | Hamburg | C. Taberner | RET | 1.57 | 60% | WON |
Games in each set7-5 KumstatTabernerPoints won55%45%Serve points won67%55%Return points won45%33%Games held5 of 64 of 6Break points saved3 of 45 of 7Aces61Double faults23 | ||||||
| 2026-08-13 | Hamburg | M. Houkes | 1.67 | 58% | WON | |
Games in each set6-4 7-6 KumstatHoukesPoints won53%47%Serve points won72%62%Return points won38%28%Games held10 of 119 of 11Break points saved4 of 57 of 9Aces115Double faults33 | ||||||
| 2026-08-11 | Hamburg | J. Mackenzie | 1.51 | 64% | WON | |
Games in each set6-7 6-3 6-3 KumstatMackenziePoints won54%46%Serve points won71%59%Return points won41%29%Games held14 of 1511 of 15Break points saved2 of 313 of 17Aces128Double faults35 | ||||||
| 2026-08-10 | Hamburg | T. Zeuch | 1.06 | 88% | WON | |
Games in each set3-6 7-6 6-3 KumstatZeuchPoints won52%48%Serve points won70%62%Return points won38%30%Games held13 of 1414 of 16Break points saved4 of 56 of 8Aces104Double faults26 | ||||||
| 2026-08-09 | Hamburg | A. Wazny | 1.10 | 86% | WON | |
Games in each set6-2 7-6 KumstatWaznyPoints won55%45%Serve points won73%61%Return points won39%27%Games held10 of 108 of 10Break points saved4 of 411 of 13Aces93Double faults34 | ||||||
| 2026-08-02 | Liberec | G. Bueno | 1.77 | 55% | WON | |
Games in each set6-3 6-1 KumstatBuenoPoints won64%36%Serve points won85%51%Return points won49%15%Games held8 of 84 of 8Break points saved1 of 17 of 11Aces62Double faults11 | ||||||
| 2026-08-01 | Liberec | S. Nagal | 1.83 | 53% | WON | |
Games in each set7-5 6-4 KumstatNagalPoints won54%46%Serve points won69%58%Return points won42%31%Games held10 of 118 of 11Break points saved1 of 25 of 8Aces96Double faults31 | ||||||
| 2026-07-31 | Liberec | F. Ferreira Silva | 1.62 | 60% | WON | |
Games in each set6-4 7-5 KumstatSilvaPoints won54%46%Serve points won71%65%Return points won35%29%Games held11 of 119 of 11Break points saved4 of 45 of 7Aces92Double faults54 | ||||||
| 2026-07-29 | Liberec | T. Seyboth Wild | 2.63 | 64% | WON | |
Games in each set6-4 6-2 KumstatWildPoints won57%43%Serve points won78%62%Return points won38%22%Games held9 of 96 of 9Break points saved0 of 02 of 5Aces116Double faults30 | ||||||
| 2026-07-27 | Liberec | Z. Kolar | 2.12 | 55% | WON | |
Games in each set6-2 4-6 6-3 KumstatKolarPoints won55%45%Serve points won70%57%Return points won43%30%Games held13 of 1410 of 13Break points saved4 of 59 of 12Aces113Double faults58 | ||||||
| 2026-07-24 | M25 Ollersbach | M. Erhard | 1.90 | 50% | LOST | |
Games in each set6-1 6-7 2-6 | ||||||
| 2026-07-22 | M25 Ollersbach | Y. Inui | 1.03 | 91% | WON | |
Games in each set6-4 6-2 | ||||||
| 2026-07-18 | Bunschoten | T. Gentzsch | 2.45 | 60% | LOST | |
Games in each set5-7 4-6 KumstatGentzschPoints won48%52%Serve points won63%66%Return points won34%37%Games held8 of 1110 of 11Break points saved1 of 41 of 2Aces57Double faults15 | ||||||
| 2026-07-17 | Bunschoten | T. Boogaard | 1.79 | 54% | WON | |
Games in each set6-1 6-1 KumstatBoogaardPoints won67%33%Serve points won70%35%Return points won65%30%Games held6 of 71 of 7Break points saved3 of 42 of 8Aces22Double faults22 | ||||||
| 2026-07-16 | Bunschoten | F. Broska | 1.88 | 51% | WON | |
Games in each set6-7 6-4 6-4 KumstatBroskaPoints won52%48%Serve points won74%71%Return points won29%26%Games held16 of 1614 of 16Break points saved0 of 01 of 3Aces1612Double faults21 | ||||||
| 2026-07-14 | Bunschoten | H. Squire | 2.81 | 66% | WON | |
Games in each set6-3 6-1 KumstatSquirePoints won60%40%Serve points won71%52%Return points won48%29%Games held8 of 84 of 8Break points saved3 of 33 of 7Aces105Double faults36 | ||||||
| 2026-07-13 | Bunschoten | M. Alves | 1.95 | 51% | WON | |
Games in each set6-3 6-3 KumstatAlvesPoints won56%44%Serve points won73%59%Return points won41%27%Games held9 of 96 of 9Break points saved2 of 22 of 5Aces85Double faults11 | ||||||
| 2026-07-12 | Bunschoten | L. Raquillet | 1.82 | 52% | WON | |
Games in each set7-6 6-4 KumstatRaquilletPoints won55%45%Serve points won66%55%Return points won45%34%Games held8 of 117 of 11Break points saved2 of 54 of 8Aces112Double faults40 | ||||||
| 2026-06-28 | Troyes | P. Lagutin | 1.45 | 65% | LOST | |
Games in each set6-7 2-6 KumstatLagutinPoints won46%54%Serve points won60%69%Return points won31%40%Games held8 of 1010 of 10Break points saved5 of 72 of 2Aces42Double faults63 | ||||||
| 2026-06-23 | M25 Zagreb (Croatia) | D. Markovina | 1.19 | 80% | LOST | |
Games in each set1-6 6-1 3-6 | ||||||
| 2026-06-18 | M25 Klosters | K. Wehnelt | 1.38 | 69% | LOST | |
Games in each set3-6 2-6 | ||||||
| 2026-06-17 | M25 Klosters | C. Denolly | 1.57 | 61% | WON | |
Games in each set6-4 7-6 | ||||||
| 2026-06-13 | M25 Ceska Lipa | G. Kravchenko | 1.78 | 54% | LOST | |
Games in each set6-3 6-7 2-6 | ||||||
| 2026-06-12 | M25 Ceska Lipa | M. Moeller | 1.95 | 51% | WON | |
Games in each set7-6 6-4 | ||||||
| 2026-06-11 | M25 Ceska Lipa | J. Filip | 1.34 | 71% | WON | |
Games in each set6-2 6-1 | ||||||
| 2026-06-09 | M25 Ceska Lipa | M. Covato | 1.04 | 93% | WON | |
Games in each set6-4 6-3 | ||||||
| 2026-06-02 | Prostejov | V. Sachko | 2.77 | 65% | LOST | |
Games in each set7-5 0-6 3-6 KumstatSachkoPoints won46%54%Serve points won53%61%Return points won39%47%Games held7 of 1311 of 14Break points saved10 of 162 of 5Aces67Double faults38 | ||||||
Backing and fading
55 matches with a price on fileEvery match where we recorded a price before play. A figure is only coloured when its 90% range excludes zero — otherwise the sample cannot tell the difference between an edge and a run of luck.
All matches
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When favourite
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When underdog
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After the first setAcross 73,836 matches on file, the player who drops the opening set wins 17% of the time.
Lost the opening set——Won the opening set——
Running total
Physical history
Retirements, walkovers and medical timeouts on file, newest first.
Challenger Clay won when C. Taberner retired v C. Taberner
ITF Clay advanced when V. Orlov withdrew
ITF Hard retired 0 - 1 v I. Lopez Morillo
ITF Hard retired 1 - 0 v N. Tepmahc
medical timeout 5 that season
last MTO 01.04.2026 · 5 MTOs in 2026 · score 6-4 3-2 (00 - 00') ⌚️68 m · odds 1.4-2.75 / 1.53 -2.5 | +2.5 2.35
medical timeout
last MTO 30.03.2026 · score 3-6 0-1 (00 - 00') · odds 4.30-1.16
medical timeout
last MTO 29.03.2026 · score 6-2 1-2 ('00 - 00) · odds 1.17-4.20
medical timeout
last MTO 27.01.2026 · score 6-4 3-3 (40 - A') · odds 1.22-3.65
medical timeout
last MTO 10.08.2025 · score 5-2 ('00 - 00) · odds 1.95-1.75