Katie Boulter vs Sayaka Ishii Head-to-Head Stats, Results & Performance Comparison

Wojtek Kolan

Our Predictions

H2H Records Career Stats

HEAD TO HEAD
K. Boulter vs S. Ishii

Katie Boulter

GBR

0

Win

Played

0

Win

Age

1.82m

Height

104

C. Rank

397

Best Rank

188

Total Titles

YTD Titles

$2.6M

Career Money

$75.0K

Right-Handed

Plays

Sayaka Ishii

JPN

0

Win

Played

0

Win

Age

1.82m

Height

104

C. Rank

397

Best Rank

188

Total Titles

YTD Titles

$2.6M

Career Money

$75.0K

Right-Handed

Plays

Head-to-head: Boulter 0 - 0 Ishii

Players	Head To Head Match Wins
Boulter	0
Ishii	0

Last 0 H2H Matches:

No past h2h happened.

K. Boulter vs S. Ishii H2H Profile

K. Boulter	Stats	S. Ishii
$2,614,479	Career Prize Money	$75,020
61.00% (355-227)	Career Total W/L	61.58% (109-68)
11	Titles	1
41.67% (15-21)	YTD Win/Loss	0.00% (0-1)

K. Boulter vs S. Ishii Match Preview:

Second serve performance recent form: In recent form (last 6 months), Katie Boulter has won 38.90% of points on their second serve, while Sayaka Ishii has won 39.81%. There is a high correlation between this stat and match prediction accuracy.
Return game stats recent form: Return stats show Katie Boulter, in recent form, has won 51.23% of their opponent's second serve points, while Sayaka Ishii has won 53.16%. The same stats for first serve returns are 33.59% and 33.23% respectively and this has a high correlation to pick who is favored in this H2H matchup.
Under pressure analysis: Katie Boulter has saved 45.70% of breakpoints in recent form, whereas Sayaka Ishii has saved 47.22% which is a useful statistic for in-game betting predictions.
Performance overview: Over the last year Katie Boulter has won 50.00% of matches played (W/L 22/22), with Sayaka Ishii winning 51.52% (W/L 17/16) that gives us an overall head-to head prediction overview.
Best surface: Katie Boulter has their best career surface win % on I.hard, winning 63% (W/L 65/39), and worse career win % on Clay, winning 56% (W/L 23/18). Sayaka Ishii has their best career surface win % on I.hard, winning 63% (W/L 9/5), and worse career win % on Grass, winning 50% (W/L 5/5).
Player level: In the last year, Katie Boulter has played most of their matches on the Main tour, winning 52.94% of matches (W/L 9/8), where as Sayaka Ishii has played most of their matches on the Challengers/ITF tournaments > $10K, winning 57.14% of matches (W/L 16/12). 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, Katie Boulter has played against opponents with an average rank of 92.61 while Sayaka Ishii has played against players with an average rank of 238.09.
Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Katie Boulter has won 64% of deciding sets over the last 12 months, while Sayaka Ishii has won 90% in all matches played on tour.
Break point conversion: In recent form, Katie Boulter has converted 41.38% of breakpoint opportunities, and Sayaka Ishii has converted 36.84% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.

Katie Boulter vs Sayaka Ishii Editorial Preview By TennisTipster88.

Recent Performance Stats

K. Boulter Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Hong Kong Tennis Open - Hong Kong - 27-10-2025
R1 Alexandra EalaA. Eala	L	6-4 2-1 ret.	Stats
Toray Pan Pacific Open - Tokyo - 20-10-2025
R1 Eva LysE. Lys	L	6-2 6-1	Stats
Q3 Kimberly BirrellK. Birrell	W	3-6 6-3 7-6(2)	Stats
Q1 Anna BlinkovaA. Blinkova	W	6-1 0-6 6-2	Stats
Japan Open - Osaka - 13-10-2025
R2 Sorana CirsteaS. Cirstea	L	6-3 6-1	Stats

View All

S. Ishii Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Hall of Fame Open - Newport - 07-07-2025
QF Tatjana MariaT. Maria	L	6-3 6-1	Stats
R2 Destanee AiavaD. Aiava	W	3-6 6-3 6-3	Stats
R1 Hanna ChangH. Chang	W	6-1 4-6 7-5	Stats
Wimbledon - London - 30-06-2025
Q1 Kathinka Von DeichmannK. Von	L	7-5 6-1	Stats
Lexus Ilkley Open - Ilkley - 09-06-2025
Q3 Valentina RyserV. Ryser	L	6-4 7-5	Stats

View All

K. Boulter vs S. Ishii Stats Breakdown Vs All H2H Opponents

K. Boulter	Stats	S. Ishii
61.00% (355/227)	YTD Win/Loss	61.58% (109/68)
58.81% (784/549)	Sets Win/Loss	57.84% (236/172)
53.21% (6567/5775)	Games Win/Loss	53.41% (2015/1758)
58.63% (180/127)	Hard Win/Loss	62.81% (76/45)
56.10% (23/18)	Clay Win/Loss	61.29% (19/12)
67.83% (97/46)	Indoor Hard W/L	60.00% (9/6)
60.44% (55/36)	Grass Win/Loss	50.00% (5/5)
0.28	Aces Per Game	0.15
1663	Aces Total	285
0.32	Double Faults Per Game	0.39
1951	Total Double Faults	709
1:16:28	Average Match Time	1:45:3
419.27	Average Opponent Rank	410.77
56% (17335/31027)	1st Serve %	62% (7100/11494)
69% (11893/17335)	1st Serve Win %	63% (4502/7100)
46% (6258/13688)	2nd Serve Win %	45% (1975/4394)
46% (1722/3765)	Break Points Won % (Total)	49% (676/1379)
44% (13945/31762)	Return Points Win %	46% (5170/11296)
46.15% (24/28)	Slam W/L	25.00% (1/3)
46.15% (24/28)	Masters W/L	0.00% (0/2)
66.67% (14/7)	Cups W/L	0% (0/0)
60.31% (79/52)	Main Tour W/L	60.00% (6/4)
65.26% (139/74)	Challenger W/L	62.67% (94/56)
66.37% (75/38)	Futures W/L	72.73% (8/3)
62% (350/562)	Best of 3 Sets Win %	62% (107/173)
33% (1/3)	Best of 5 Sets Win %	0% (0/2)
58% (80/138)	Tiebreaks Win % (Total)	50% (17/34)
59% (109/184)	Deciding Set Win %	67% (37/55)
87% (337/293)	1st Set Won, Won Match	87% (98/85)
12% (337/40)	1st Set Won, Lost Match	12% (98/12)
25% (244/62)	1st Set Lost, Won Match	30% (79/24)