Rei Sakamoto vs Jan Kumstat Head-to-Head Stats, Results & Performance Comparison

Wojtek Kolan

Our Predictions

H2H Records Career Stats

HEAD TO HEAD
R. Sakamoto vs J. Kumstat

Rei Sakamoto

JPN

0

Win

Played

0

Win

Age

Height

187

C. Rank

670

159

Best Rank

670

Total Titles

YTD Titles

$113.6K

Career Money

Plays

Jan Kumstat

CZE

0

Win

Played

0

Win

Age

Height

187

C. Rank

670

159

Best Rank

670

Total Titles

YTD Titles

$113.6K

Career Money

Plays

Head-to-head: Sakamoto 0 - 0 Kumstat

Players	Head To Head Match Wins
Sakamoto	0
Kumstat	0

Last 0 H2H Matches:

No past h2h happened.

R. Sakamoto vs J. Kumstat H2H Profile

R. Sakamoto	Stats	J. Kumstat
$113,620	Career Prize Money	$0
52.80% (66-59)	Career Total W/L	50.94% (27-26)
3	Titles	0
0.00% (0-3)	YTD Win/Loss	0% (0-0)

R. Sakamoto vs J. Kumstat Match Preview:

Second serve performance recent form: In recent form (last 6 months), Rei Sakamoto has won 46.36% of points on their second serve, while Jan Kumstat has won 42.35%. There is a high correlation between this stat and match prediction accuracy.
Return game stats recent form: Return stats show Rei Sakamoto, in recent form, has won 45.99% of their opponent's second serve points, while Jan Kumstat has won 49.21%. The same stats for first serve returns are 23.67% and 25.81% respectively and this has a high correlation to pick who is favored in this H2H matchup.
Under pressure analysis: Rei Sakamoto has saved 55.47% of breakpoints in recent form, whereas Jan Kumstat has saved 56.36% which is a useful statistic for in-game betting predictions.
Performance overview: Over the last year Rei Sakamoto has won 56.67% of matches played (W/L 34/26), with Jan Kumstat winning 57.14% (W/L 24/18) that gives us an overall head-to head prediction overview.
Best surface: Rei Sakamoto has their best career surface win % on Hard, winning 57% (W/L 45/34), and worse career win % on I.hard, winning 39% (W/L 7/11). Jan Kumstat has their best career surface win % on Clay, winning 57% (W/L 17/15), and worse career win % on Hard, winning 50% (W/L 7/7).
Player level: In the last year, Rei Sakamoto has played most of their matches on the Challengers/ITF tournaments > $10K, winning 60.87% of matches (W/L 28/18), where as Jan Kumstat has played most of their matches on the Futures/Satellites/ITF tournaments $10K, winning 58.06% of matches (W/L 18/13). When comparing stats between players to predict the favorite, it is of course all relative to the event level they have been playing at.
Opponent quality stats: Over the last 12 months, Rei Sakamoto has played against opponents with an average rank of 299.9 while Jan Kumstat has played against players with an average rank of 343.
Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Rei Sakamoto has won 68% of deciding sets over the last 12 months, while Jan Kumstat has won 60% in all matches played on tour.
Break point conversion: In recent form, Rei Sakamoto has converted 28.49% of breakpoint opportunities, and Jan Kumstat has converted 37.50% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.

Rei Sakamoto vs Jan Kumstat Editorial Preview By TennisTipster88.

Recent Performance Stats

R. Sakamoto Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Yokohama Challenger - 17-11-2025
F Kaichi UchidaK. Uchida	W	4-6 7-6(4) 6-4	Stats
SF Akira SantillanA. Santillan	W	3-6 6-1 6-3	Stats
QF Yasutaka UchiyamaY. Uchiyama	W	3-6 6-3 6-4	Stats
R2 Maxim ZhukovM. Zhukov	W	6-1 6-2	Stats
R1 Kasidit SamrejK. Samrej	W	6-4 7-6(1)	Stats

View All

J. Kumstat Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Athens Challenger - 24-11-2025
R2 Michael GeertsM. Geerts	L	7-6(2) 6-1	Stats
R1 Maks KasnikowskiM. Kasnikowski	W	7-5 4-6 6-1	Stats
Q3 Andrin CasanovaA. Casanova	W	6-0 6-1	Stats
Lyon Challenger - 10-11-2025
R1 Yannick HanfmannY. Hanfmann	L	6-1 6-3	Stats
M25 Monastir - 03-11-2025
R1 Tiago PereiraT. Pereira	L	6-2 2-6 6-4	Stats

View All

R. Sakamoto vs J. Kumstat Stats Breakdown Vs All H2H Opponents

R. Sakamoto	Stats	J. Kumstat
52.80% (66/59)	YTD Win/Loss	50.94% (27/26)
50.68% (148/144)	Sets Win/Loss	47.86% (56/61)
49.07% (1367/1419)	Games Win/Loss	48.97% (548/571)
56.96% (45/34)	Hard Win/Loss	50.00% (7/7)
50.00% (14/14)	Clay Win/Loss	53.13% (17/15)
38.89% (7/11)	Indoor Hard W/L	42.86% (3/4)
0.51	Aces Per Game	0.39
696	Aces Total	211
0.22	Double Faults Per Game	0.22
299	Total Double Faults	119
1:45:17	Average Match Time	1:24:23
381.1	Average Opponent Rank	339.4
62% (5429/8791)	1st Serve %	55% (1739/3185)
70% (3779/5429)	1st Serve Win %	71% (1229/1739)
51% (1718/3362)	2nd Serve Win %	46% (665/1446)
38% (280/728)	Break Points Won % (Total)	38% (129/338)
37% (3215/8695)	Return Points Win %	40% (1299/3284)
33.33% (1/2)	Slam W/L	0% (0/0)
57.14% (4/3)	Masters W/L	0% (0/0)
0.00% (0/1)	Cups W/L	0% (0/0)
20.00% (1/4)	Main Tour W/L	0% (0/0)
59.09% (39/27)	Challenger W/L	35.29% (6/11)
48.84% (21/22)	Futures W/L	58.33% (21/15)
53% (65/123)	Best of 3 Sets Win %	50% (25/50)
0% (0/1)	Best of 5 Sets Win %	0% (0/1)
59% (26/44)	Tiebreaks Win % (Total)	67% (10/15)
62% (26/42)	Deciding Set Win %	67% (8/12)
81% (59/48)	1st Set Won, Won Match	96% (23/22)
19% (59/11)	1st Set Won, Lost Match	4% (23/1)
27% (66/18)	1st Set Lost, Won Match	13% (30/4)