ChallengerHard (Indoor)Taipei2026-11-04 03:00

Jan Kumstat v Billy Harris

The market

No published price yet

Percentages are the implied chance of winning with the bookmaker's margin removed.

Recent form

J. KumstatWLLLW

B. HarrisWLWWW

Last five completed matches, most recent first.

Head to head

First career meetingNo previous matches between these two on record.

This season & this event

J. Kumstat

B. Harris

39-17

12-10

Did not play

2026 record

2026 on hard

Here in 2025

Here in 2024

23-34

15-21

Did not play

Ranking points fall off a year after they are earned, so a player who went deep here last year must match it or drop in the rankings. That shapes effort in a way the price does not always show.

The players

Jan Kumstat

Czech Republic

Billy Harris

United Kingdom

191

Czech Republic

38–16

9–8

29–8

—

Ranking

Age

Country

2026 W/L

Titles

Hard

Clay

Grass

241

United Kingdom

19–32

11–20

1–8

7–4

Ranking, record and surface splits are for the most recent season on file. Height, weight and handedness are not published by our data provider.

J. Kumstat — last 10

With the pre-match price we recorded at the time.

Date	Event	Surface	Opponent	Their price	Market	Result
2026-11-02	Taipei	Hard (Indoor)	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	Hard	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	Hard (Indoor)	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	Hard	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	Hard	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	Clay	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	Clay	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	Clay	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	Clay	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	Clay	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

B. Harris — last 10

With the pre-match price we recorded at the time.

Date	Event	Surface	Opponent	Score	Their price	Market	Result
2026-11-02	Taipei	Hard (Indoor)	K. S. Chen		—	—	WON
Games in each set6-2 6-2 HarrisChenPoints won57%43%Serve points won66%56%Return points won44%34%Games held8 of 84 of 8Break points saved10 of 103 of 7Aces70Double faults13
2026-10-31	Seoul	Hard	T. Atmane		3.49	72%	LOST
Games in each set3-6 1-6 HarrisAtmanePoints won41%59%Serve points won47%64%Return points won36%53%Games held3 of 87 of 8Break points saved6 of 115 of 6Aces16Double faults32
2026-10-30	Seoul	Hard	R. Sakamoto	RET	4.28	77%	WON
Games in each set3-0 HarrisSakamotoPoints won87%13%Serve points won80%0%Return points won100%20%Games held2 of 20 of 1Break points saved0 of 00 of 1Aces40Double faults01
2026-10-29	Seoul	Hard	A. Vukic		2.89	67%	WON
Games in each set6-2 6-4 HarrisVukicPoints won55%45%Serve points won65%53%Return points won47%35%Games held8 of 95 of 9Break points saved1 of 29 of 13Aces43Double faults11
2026-10-27	Seoul	Hard	J. Kim		—	—	WON
Games in each set7-6 6-2 HarrisKimPoints won56%44%Serve points won61%49%Return points won51%39%Games held8 of 106 of 10Break points saved6 of 82 of 6Aces22Double faults45
2026-10-12	Roanne	Hard (Indoor)	M. Bobichon		1.38	70%	LOST
Games in each set5-7 6-7 HarrisBobichonPoints won47%53%Serve points won60%67%Return points won33%40%Games held9 of 1210 of 12Break points saved4 of 76 of 8Aces29Double faults35
2026-10-05	Shanghai	Hard	D. Svrcina		3.18	70%	LOST
Games in each set6-4 6-7 5-7 HarrisSvrcinaPoints won48%52%Serve points won56%62%Return points won38%44%Games held12 of 1712 of 17Break points saved5 of 102 of 7Aces159Double faults16
2026-09-28	Mouilleron-Le-Captif	Hard (Indoor)	F. Balshaw		2.20	58%	LOST
Games in each set6-7 6-3 6-7 HarrisBalshawPoints won50%50%Serve points won63%64%Return points won36%37%Games held14 of 1712 of 16Break points saved2 of 55 of 9Aces28Double faults28
2026-09-24	St. Tropez	Hard	M. Cassone		1.90	51%	LOST
Games in each set6-7 4-6 HarrisCassonePoints won46%54%Serve points won73%81%Return points won19%27%Games held10 of 1111 of 11Break points saved0 of 10 of 0Aces64Double faults31
2026-09-21	St. Tropez	Hard	N. Budkov Kjaer		2.53	62%	WON
Games in each set3-6 6-3 7-5 HarrisKjaerPoints won52%48%Serve points won61%60%Return points won40%39%Games held12 of 1511 of 15Break points saved9 of 124 of 8Aces117Double faults55

Also at this event

Delaney v Jasika Shimizu v Holmgren Watanuki v Imamura