Player research cockpit

SayakaIshii

TennisJack analysis

Sayaka Ishii currently has a large TennisJack sample of 51 completed matches, with a 45.1% win rate in the loaded match history. The recent form line is 6-4 across the latest 10 completed matches.

Latest rank #226

Matches51Completed matches

Win rate45.1%Across all matches

Latest form6-4In latest 10 matches

Index statusStrong candidateProfile confidence

Performance metrics

Hold Base61.4%

Break Pressure33.8%

Latest form (10 matches)

6-4

L W W L W W W L W L

Surface profile

Unknown

Canonical/players/sayaka-ishii/

Index statusStrong candidate

Last updatedData from TennisJack

Profile intelligence

Ten signals worth watching.

Built from 51 completed TennisJack matches: form, surface, odds, pressure and close-set behavior. The full match log stays below for audit.

Player DNA

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

Slow starter Break-heavy player

Set 1 punch37.3%

Service shield61.4%

Return bite33.8%

Decider risk29.4%

Favorite / Underdog Split

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

Favorite 57.9% 11-8 - 19 matches Avg odds 1.40 | 1+ set 63.2%

Underdog 36.8% 7-12 - 19 matches Avg odds 2.97 | 1+ set 52.6%

First Set Personality

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

Set 1 win37.3%

Breaks first S138.1%

Broken first S161.9%

Recovers S123.1%

Break Pressure Profile

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

Avg breaks3.86

Avg broken4.08

Balance-0.22

Clean service matches7.8%

3+ breaks produced60.8%

Set 2 win43.1%

Clean Win / Comeback Index

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

34.8%Clean 2-0 share among wins

Clean 2-0 wins8

Comeback signals23

Lost set 1, won match7

Comeback index45.1%

Surface Edge

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

Primary surfaceUnknown

Primary record13-9

Primary WR59.1%

Best surfaceUnknown 59.1%

Unknown13-959.1%

Hardcourt outdoor5-935.7%

Grass5-838.5%

Carpet outdoor0-10.0%

Odds Value Pulse

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

Avg win odds1.72

Avg loss odds2.60

Biggest win odds2.75

2.00+ odds WR40.0%

2.00+ sample15

Odds sample38

Decider Profile

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

Three-set share29.4%

Decider record10-5

Set 3 win66.7%

After losing S121.9%

Close Set Risk

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

Close sets22-31

Close-set WR41.5%

Tie-breaks8-6

Matches with tight set37

Momentum Trend

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

Stable form · 1 losses running

L W W L W W W L W L

Latest 5 WR60.0%

Previous 10 WR60.0%

Latest 53-2

Previous 106-4

Trend delta+0.0%

Latest 5 WR60.0%

Match log

All Sayaka Ishii matches in the TennisJack sample.

Scan date, tournament, surface, opponent, set score, result and service-return indicators before opening the deeper tools.

Open Player Research

Date	Match	Score	Result	Hold / Break
25.10.2026Round 19	Sayaka Ishii vs Yulia PutintsevaWTA Tokyo	6-4 2-6 3-6Hardcourt outdoor	Loss	Hold 53.9% Break 28.6%
24.10.2026Round 14	Sayaka Ishii vs Kyoka OkamuraWTA Tokyo	6-4 6-3Hardcourt outdoor	Win	Hold 88.9% Break 33.3%
18.10.2026Round 19	Sayaka Ishii vs Mary StoianaWTA Osaka	4-6 5-7Hardcourt outdoor	Loss	Hold 36.4% Break 45.5%
24.09.2026	Sayaka Ishii vs Natsumi KawaguchiW50 Nanao	5-7 7-6 6-2Surface pending	Win	Hold 68.8% Break 35.3%
23.09.2026	Sayaka Ishii vs Nagi HanataniW50 Nanao	7-6 6-2Surface pending	Win	Hold 60.0% Break 54.5%
22.09.2026	Sayaka Ishii vs Rira KosakaW50 Nanao	6-3 6-1Surface pending	Win	Hold 87.5% Break 62.5%
18.09.2026	Sayaka Ishii vs Hiromi AbeW35 Kyoto	6-4 4-6 3-6Surface pending	Loss	Hold 53.3% Break 35.7%
17.09.2026	Sayaka Ishii vs Amelia RajeckiW35 Kyoto	6-7 7-6 6-3Surface pending	Win	Hold 100.0% Break 10.5%
15.09.2026	Sayaka Ishii vs Cheuk Ying ShekW35 Kyoto	7-6 6-4Surface pending	Win	Hold 90.9% Break 16.7%
30.08.2026	Sayaka Ishii vs Urszula RadwanskaW50 Leiria	4-6 5-7Surface pending	Loss	Hold 45.5% Break 36.4%
27.08.2026	Sayaka Ishii vs Alice FerlitoW15 Torello	2-6 6-2 4-6Surface pending	Loss	Hold 53.9% Break 38.5%
26.08.2026	Sayaka Ishii vs Neus Torner SensanoW15 Torello	7-6 6-1Surface pending	Win	Hold 55.6% Break 63.6%
21.08.2026	Sayaka Ishii vs Juliana GiaccioW15 Logrono	1-6 2-6Surface pending	Loss	Hold 28.6% Break 12.5%
20.08.2026	Sayaka Ishii vs Valentina LoscialeW15 Logrono	6-3 6-4Surface pending	Win	Hold 88.9% Break 40.0%
19.08.2026	Sayaka Ishii vs Jordina FontW15 Logrono	6-7 7-5 6-1Surface pending	Win	Hold 56.2% Break 62.5%
10.08.2026	Sayaka Ishii vs Katarina KujovicW35 Aldershot	4-6 5-7Surface pending	Loss	Hold 36.4% Break 45.5%
09.08.2026	Sayaka Ishii vs Erin PearceW35 Aldershot	6-2 6-1Surface pending	Win	Hold 85.7% Break 75.0%
05.08.2026	Sayaka Ishii vs Amelia RajeckiW35 Roehampton	5-7 3-6Surface pending	Loss	Hold 60.0% Break 18.2%
03.08.2026	Sayaka Ishii vs Gabriella Da Silva FickW35 Roehampton	7-6 7-5Surface pending	Win	Hold 75.0% Break 30.8%
02.08.2026	Sayaka Ishii vs Summer YardleyW35 Roehampton	6-1 6-1Surface pending	Win	Hold 100.0% Break 71.4%
31.07.2026	Sayaka Ishii vs Rina SaigoW35 Aldershot	3-6 0-6Surface pending	Loss	Hold - Break -
30.07.2026	Sayaka Ishii vs Hikaru SatoW35 Aldershot	6-4 4-6 6-2Surface pending	Win	Hold 71.4% Break 42.9%
29.07.2026	Sayaka Ishii vs Francesca GandolfiW35 Aldershot	6-7 6-4 6-3Surface pending	Win	Hold 81.2% Break 31.2%
14.07.2026	Sayaka Ishii vs Hannah KlugmanW50 Nottingham	6-7 1-6Surface pending	Loss	Hold 55.6% Break 18.2%
08.07.2026R32	Sayaka Ishii vs Kayla CrossWTA Newport	2-6 3-6Grass	Loss	Hold 33.3% Break 25.0%
23.06.2026Round 14	Sayaka Ishii vs Kaitlin QuevedoWimbledon Women	0-6 3-6Grass	Loss	Hold 28.6% Break 12.5%
07.06.2026Round 14	Sayaka Ishii vs Vendula ValdmannovaWTA Ilkley	3-6 1-6Grass	Loss	Hold 37.5% Break 12.5%
30.05.2026Round 14	Sayaka Ishii vs Vendula ValdmannovaWTA Birmingham	6-3 2-6 4-6Grass	Loss	Hold 61.5% Break 30.8%
20.05.2026	Sayaka Ishii vs Natsumi KawaguchiW100 Takasaki	3-6 6-7Hardcourt outdoor	Loss	Hold 80.0% Break 8.3%
12.05.2026	Sayaka Ishii vs Mina MiyaharaW75 Kurume	6-7 1-6Carpet outdoor	Loss	Hold 44.4% Break 27.3%
28.04.2026	Sayaka Ishii vs Rina SaigoW100 Gifu	4-6 3-6Hardcourt outdoor	Loss	Hold 50.0% Break 22.2%
27.04.2026	Sayaka Ishii vs Natsumi KawaguchiW100 Gifu	7-6 6-4Hardcourt outdoor	Win	Hold 72.7% Break 27.3%
23.04.2026	Sayaka Ishii vs Hanna ChangW35 Miyazaki	5-7 2-6Hardcourt outdoor	Loss	Hold 60.0% Break 10.0%
22.04.2026	Sayaka Ishii vs Naho SatoW35 Miyazaki	4-6 6-2 6-3Hardcourt outdoor	Win	Hold 46.1% Break 69.2%
16.04.2026	Sayaka Ishii vs Kanon SawashiroW35 Miyazaki	0-6 1-6Hardcourt outdoor	Loss	Hold 16.7% Break 0.0%
14.04.2026	Sayaka Ishii vs Aoi ItoW35 Miyazaki	6-0 6-0Hardcourt outdoor	Win	Hold 100.0% Break 100.0%
09.04.2026	Sayaka Ishii vs Kyoka OkamuraW35 Osaka	4-6 3-6Hardcourt outdoor	Loss	Hold 60.0% Break 11.1%
08.04.2026	Sayaka Ishii vs Carol ZhaoW35 Osaka	6-3 7-5Hardcourt outdoor	Win	Hold 63.6% Break 60.0%
17.03.2026	Sayaka Ishii vs Lizette CabreraW75 Kofu	4-6 4-6Hardcourt outdoor	Loss	Hold 70.0% Break 10.0%
03.03.2026	Sayaka Ishii vs Naho SatoW35 Launceston	3-6 6-1 5-7Surface pending	Loss	Hold 57.1% Break 42.9%
27.02.2026	Sayaka Ishii vs Elena MicicW35 Burnie	3-6 5-7Hardcourt outdoor	Loss	Hold 70.0% Break 9.1%
11.07.2025QF	Sayaka Ishii vs Tatjana MariaWTA Newport	3-6 1-6Grass	Loss	Hold 25.0% Break 25.0%
09.07.2025R16	Sayaka Ishii vs Destanee AiavaWTA Newport	3-6 6-3 6-3Grass	Win	Hold 61.5% Break 50.0%
08.07.2025R32	Sayaka Ishii vs Hanna ChangWTA Newport	6-1 4-6 7-5Grass	Win	Hold 60.0% Break 57.1%
24.06.2025Round 14	Sayaka Ishii vs Kathinka Von DeichmannWimbledon Women	5-7 1-6Grass	Loss	Hold 55.6% Break 10.0%
09.06.2025Round 19	Sayaka Ishii vs Valentina RyserWTA Ilkley	4-6 5-7Grass	Loss	Hold 54.5% Break 30.0%
08.06.2025Round 14	Sayaka Ishii vs Alana SmithWTA Ilkley	6-1 1-6 6-2Grass	Win	Hold 81.8% Break 36.4%
03.06.2025R32	Sayaka Ishii vs Sijia WeiWTA Birmingham	3-6 4-6Grass	Loss	Hold 55.6% Break 20.0%
01.06.2025Round 19	Sayaka Ishii vs Arianne HartonoWTA Birmingham	3-6 7-6 6-3Grass	Win	Hold 71.4% Break 29.4%
31.05.2025Round 14	Sayaka Ishii vs Amelia RajeckiWTA Birmingham	6-4 6-4Grass	Win	Hold 90.0% Break 30.0%
19.05.2025Round 14	Sayaka Ishii vs Panna UdvardyFrench Open Women	2-6 1-6Clay	Loss	Hold 28.6% Break 12.5%