Sayaka Ishii vs Katie Boulter Head-to-Head Stats, Results & Performance Comparison
Wojtek Kolan
HEAD TO HEAD
S. Ishii vs K. Boulter
Sayaka Ishii
JPN
l
w
w
l
w
l
l
w
w
l
0
Win
0
Played
0
Win
20
Age
29
-
Height
1.82m
397
C. Rank
104
188
Best Rank
23
0
Total Titles
3
0
YTD Titles
0
$75.0K
Career Money
$2.6M
-
Plays
Right-Handed
Katie Boulter
GBR
l
w
l
l
w
l
w
w
l
l
0
Win
0
Played
0
Win
20
Age
29
-
Height
1.82m
397
C. Rank
104
188
Best Rank
23
0
Total Titles
3
0
YTD Titles
0
$75.0K
Career Money
$2.6M
-
Plays
Right-Handed
Head-to-head: Ishii 0 - 0 Boulter
| Players | Head To Head Match Wins |
|---|---|
| Ishii | 0 |
| Boulter | 0 |
Last 0 H2H Matches:
No past h2h happened.
S. Ishii vs K. Boulter H2H Profile
| Stats | ||
|---|---|---|
| $75,020 | Career Prize Money | $2,614,479 |
| 61.58% (109-68) | Career Total W/L | 61.00% (355-227) |
| 1 | Titles | 11 |
| 0.00% (0-1) | YTD Win/Loss | 41.67% (15-21) |
S. Ishii vs K. Boulter Match Preview:
- Second serve performance recent form: In recent form (last 6 months), Sayaka Ishii has won 39.81% of points on their second serve, while Katie Boulter has won 38.90%. There is a high correlation between this stat and match prediction accuracy.
- Return game stats recent form: Return stats show Sayaka Ishii, in recent form, has won 53.16% of their opponent's second serve points, while Katie Boulter has won 51.23%. The same stats for first serve returns are 33.23% and 33.59% respectively and this has a high correlation to pick who is favored in this H2H matchup.
- Under pressure analysis: Sayaka Ishii has saved 47.22% of breakpoints in recent form, whereas Katie Boulter has saved 45.70% which is a useful statistic for in-game betting predictions.
- Performance overview: Over the last year Sayaka Ishii has won 51.52% of matches played (W/L 17/16), with Katie Boulter winning 50.00% (W/L 22/22) that gives us an overall head-to head prediction overview.
- Best surface: Sayaka Ishii has their best career surface win % on I.hard, winning 64% (W/L 9/5), and worse career win % on Grass, winning 50% (W/L 5/5). Katie Boulter has their best career surface win % on I.hard, winning 64% (W/L 65/39), and worse career win % on Clay, winning 56% (W/L 23/18).
- Player level: In the last year, Sayaka Ishii has played most of their matches on the Challengers/ITF tournaments > $10K, winning 57.14% of matches (W/L 16/12), where as Katie Boulter has played most of their matches on the Main tour, winning 52.94% of matches (W/L 9/8). 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, Sayaka Ishii has played against opponents with an average rank of 238.09 while Katie Boulter has played against players with an average rank of 92.61.
- Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Sayaka Ishii has won 90% of deciding sets over the last 12 months, while Katie Boulter has won 64% in all matches played on tour.
- Break point conversion: In recent form, Sayaka Ishii has converted 36.84% of breakpoint opportunities, and Katie Boulter has converted 41.38% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.
Sayaka Ishii vs Katie Boulter Editorial Preview By TennisTipster88.
Recent Performance Stats
2nd Serve Win %: Ishii 45%, Boulter 43%.
Opp 2nd Serve Pts Won: Ishii 55%, Boulter 56%.
Break Points Saved %: Ishii 52%, Boulter 51%.
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 | ||
R2  Destanee AiavaD. Aiava | W | 3-6 6-3 6-3 | ||
R1  Hanna ChangH. Chang | W | 6-1 4-6 7-5 | ||
| Wimbledon - London - 30-06-2025 | ||||
Q1  Kathinka Von DeichmannK. Von | L | 7-5 6-1 | ||
| Lexus Ilkley Open - Ilkley - 09-06-2025 | ||||
Q3  Valentina RyserV. Ryser | L | 6-4 7-5 | ||
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. | ||
| Toray Pan Pacific Open - Tokyo - 20-10-2025 | ||||
R1 Eva LysE. Lys | L | 6-2 6-1 | ||
Q3 Kimberly BirrellK. Birrell | W | 3-6 6-3 7-6(2) | ||
Q1  Anna BlinkovaA. Blinkova | W | 6-1 0-6 6-2 | ||
| Japan Open - Osaka - 13-10-2025 | ||||
R2  Sorana CirsteaS. Cirstea | L | 6-3 6-1 | ||
S. Ishii vs K. Boulter Stats Breakdown Vs All H2H Opponents
| Stats | ||
|---|---|---|
| 61.58% (109/68) | YTD Win/Loss | 61.00% (355/227) |
| 57.84% (236/172) | Sets Win/Loss | 58.81% (784/549) |
| 53.41% (2015/1758) | Games Win/Loss | 53.21% (6567/5775) |
| 62.81% (76/45) | Hard Win/Loss | 58.63% (180/127) |
| 61.29% (19/12) | Clay Win/Loss | 56.10% (23/18) |
| 60.00% (9/6) | Indoor Hard W/L | 67.83% (97/46) |
| 50.00% (5/5) | Grass Win/Loss | 60.44% (55/36) |
| 0.15 | Aces Per Game | 0.28 |
| 285 | Aces Total | 1663 |
| 0.39 | Double Faults Per Game | 0.32 |
| 709 | Total Double Faults | 1951 |
| 1:45:3 | Average Match Time | 1:16:28 |
| 410.77 | Average Opponent Rank | 419.27 |
| 62% (7100/11494) | 1st Serve % | 56% (17335/31027) |
| 63% (4502/7100) | 1st Serve Win % | 69% (11893/17335) |
| 45% (1975/4394) | 2nd Serve Win % | 46% (6258/13688) |
| 49% (676/1379) | Break Points Won % (Total) | 46% (1722/3765) |
| 46% (5170/11296) | Return Points Win % | 44% (13945/31762) |
| 25.00% (1/3) | Slam W/L | 46.15% (24/28) |
| 0.00% (0/2) | Masters W/L | 46.15% (24/28) |
| 0% (0/0) | Cups W/L | 66.67% (14/7) |
| 60.00% (6/4) | Main Tour W/L | 60.31% (79/52) |
| 62.67% (94/56) | Challenger W/L | 65.26% (139/74) |
| 72.73% (8/3) | Futures W/L | 66.37% (75/38) |
| 62% (107/173) | Best of 3 Sets Win % | 62% (350/562) |
| 0% (0/2) | Best of 5 Sets Win % | 33% (1/3) |
| 50% (17/34) | Tiebreaks Win % (Total) | 58% (80/138) |
| 67% (37/55) | Deciding Set Win % | 59% (109/184) |
| 87% (98/85) | 1st Set Won, Won Match | 87% (337/293) |
| 12% (98/12) | 1st Set Won, Lost Match | 12% (337/40) |
| 30% (79/24) | 1st Set Lost, Won Match | 25% (244/62) |
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