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Sayaka Ishii tennis player profile visual with TennisJack stats and match analysis
TJPlayer research cockpit

Sayaka Ishii

TennisJack analysis

Sayaka Ishii currently has a useful TennisJack sample of 28 completed matches, with a 32.1% win rate in the loaded match history. The recent form line is 1-9 across the latest 10 completed matches.

Latest rank #226
M
Matches28Completed matches
%
Win rate32.1%Across all matches
F
Latest form1-9In latest 10 matches
Performance metrics
Hold Base56.8%
Break Pressure28.5%
Latest form (10 matches)
1-9
L Oldest W 2 L 3 L 4 L 5 L 6 L 7 L 8 L 9 L Latest
Surface profile
Grass 13 matches · 38.5% WR
Japan flag
CountryJapanCountry profile
PlayRightRight-handed
Highest Rank#188Singles career high
Age / BirthdayPendingBirthday not listed
Profile intelligence

Ten signals worth watching.

Built from 28 completed TennisJack matches: form, surface, odds, pressure and close-set behavior. The full match log stays below for audit.

01

Player DNA

Quick fingerprint from starts, service base, return bite and decider exposure.

Slow starter Break-heavy player
Set 1 punch25.0%
Service shield56.8%
Return bite28.5%
Decider risk25.0%
02

Favorite / Underdog Split

How the player behaves when priced as market favorite versus outsider.

Favorite 46.2% 6-7 - 13 matches Avg odds 1.40 | 1+ set 53.8%
Underdog 25.0% 3-9 - 12 matches Avg odds 2.73 | 1+ set 33.3%
03

First Set Personality

Shows whether the player starts cleanly, breaks first, or survives early pressure.

Set 1 win25.0%
Breaks first S128.6%
Broken first S171.4%
Recovers S115.0%
04

Break Pressure Profile

Return damage versus service leakage, built from set-level break counters.

Avg breaks3.39
Avg broken4.46
Balance-1.07
Clean service matches3.6%
3+ breaks produced46.4%
Set 2 win28.6%
05

Clean Win / Comeback Index

Separates smooth 2-0 wins from matches where the player had to repair damage.

22.2%Clean 2-0 share among wins
Clean 2-0 wins2
Comeback signals9
Lost set 1, won match3
Comeback index32.1%
06

Surface Edge

Where the profile is most trustworthy and where the win rate really travels.

Primary surfaceGrass
Primary record5-8
Primary WR38.5%
Best surfaceGrass 38.5%
Grass5-838.5%
Hardcourt outdoor4-833.3%
Carpet outdoor0-10.0%
Clay0-10.0%
07

Odds Value Pulse

Shows whether the player wins as expected or creates value at outsider prices.

Avg win odds1.69
Avg loss odds2.24
Biggest win odds2.38
2.00+ odds WR33.3%
2.00+ sample9
Odds sample25
08

Decider Profile

How often matches become complicated, and whether the player survives the third set.

Three-set share25.0%
Decider record5-2
Set 3 win71.4%
After losing S114.3%
09

Close Set Risk

Tie-break and 7-5 / 7-6 pressure profile, useful for spotting fragile edges.

Close sets7-17
Close-set WR29.2%
Tie-breaks2-3
Matches with tight set19
10

Momentum Trend

Compares the latest 5 matches with the previous 10 so form shifts are visible immediately.

Cooling down · 8 losses running
L oldest W 2 L 3 L 4 L 5 L 6 L 7 L 8 L 9 L latest
Latest 5 0-5 0.0% WR
Trend delta -40.0% latest vs previous sample
Match log

All Sayaka Ishii matches in the TennisJack sample.

Scan date, tournament, surface, players, odds, final score, result and service-return indicators from completed matches.

Open Player Research
Loss
28.04.2026
W100 GifuHardcourt outdoor
Rina Saigo
vs
Sayaka Ishii
2.75
1.40
6-4 6-3
Hold
50.0%
Break
22.2%
Win
22.04.2026
W35 MiyazakiHardcourt outdoor
Sayaka Ishii
vs
Naho Sato
1.57
2.25
4-6 6-2 6-3
Hold
46.1%
Break
69.2%
Win
14.04.2026
W35 MiyazakiHardcourt outdoor
Sayaka Ishii
vs
Aoi Ito
2.20
1.62
6-0 6-0
Hold
100.0%
Break
100.0%
Loss
04.03.2026
W35 LauncestonHardcourt outdoor
Naho Sato
vs
Sayaka Ishii
4.00
1.22
6-3 1-6 7-5
Hold
57.1%
Break
42.9%
Loss
03.06.2025R32
WTA BirminghamGrass
Sayaka Ishii
vs
Sijia Wei
1.91
1.80
3-6 4-6
Hold
55.6%
Break
20.0%