SI
WTA · Rank #519
WTA · Rank #519
Sayaka Ishii
21yrs
Right
60.6%Accuracy
33
Matches Analyzed
Recent Form
LLLLW
Recent & Upcoming
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S. Ishii vs H. Abe, ITF Women - W50 Nanao, 02:00, Finished. Match winner odds: 3.35 for S. Ishii, 1.33 for H. Abe. AI winner pick: H. Abe, odds 1.33, confidence 6.4 out of 10. This tip won. Predicted score: 3-6, 2-6. Best AI tip: H. Abe, odds 1.33, confidence 6.4 out of 10. This tip won.
S. Ishii
H. Abe
N. Kawaguchi vs S. Ishii, ITF Women - W50 Nanao, 03:51, Finished. Match winner odds: 1.7 for N. Kawaguchi, 2.38 for S. Ishii. AI winner pick: N. Kawaguchi, odds 1.7, confidence 8.4 out of 10. This tip lost. Predicted score: 6-4, 6-4. Best AI tip: N. Kawaguchi, odds 1.7, confidence 8.4 out of 10. This tip lost.
N. Kawaguchi
S. Ishii
N. Hanatani vs S. Ishii, ITF Women - W50 Nanao, 13:00, Finished. Match winner odds: 9 for N. Hanatani, 1.04 for S. Ishii. AI winner pick: S. Ishii, odds 1.04, confidence 5.2 out of 10. This tip won. Predicted score: 3-6, 4-6. Best AI tip: S. Ishii, odds 1.04, confidence 5.2 out of 10. This tip won.
N. Hanatani
S. Ishii
02:00
Finished
0200
S. Ishii
H. Abe
0
2
▾3.35
▴1.33
2
▴1.33
3626
2
▴1.33
6.4/10
03:51
Finished
0351
N. Kawaguchi
S. Ishii
1
2
▾1.7
▴2.38
1
▾1.7
6464
1
▾1.7
8.4/10
13:00
Finished
1300
N. Hanatani
S. Ishii
0
2
▾9
▴1.04
2
▴1.04
3646
2
▴1.04
5.2/10
H. Abe vs S. Ishii, ITF Women - W35 Kyoto, 11:00, Finished. Match winner odds: 1.47 for H. Abe, 2.8 for S. Ishii. AI winner pick: H. Abe, odds 1.47, confidence 5.7 out of 10. This tip won. Predicted score: 6-4, 6-2. Best AI tip: H. Abe, odds 1.47, confidence 5.7 out of 10. This tip won.
H. Abe
S. Ishii
S. Ishii vs A. Rajecki, ITF Women - W35 Kyoto, 13:00, Finished. Match winner odds: 2.27 for S. Ishii, 1.7 for A. Rajecki. AI winner pick: A. Rajecki, odds 1.7, confidence 3.7 out of 10. This tip lost. Predicted score: 4-6, 3-6. Best AI tip: A. Rajecki, odds 1.7, confidence 3.7 out of 10. This tip lost.
S. Ishii
A. Rajecki
S. Ishii vs C. Y. Shek, ITF Women - W35 Kyoto, 13:00, Finished. Match winner odds: 1.66 for S. Ishii, 2.23 for C. Y. Shek. AI winner pick: C. Y. Shek, odds 2.23, confidence 2.6 out of 10. This tip lost. Predicted score: 2-6, 4-6. Best AI tip: U21.5, odds 1.75, confidence 4.5 out of 10. This tip lost.
S. Ishii
C. Y. Shek
11:00
Finished
1100
H. Abe
S. Ishii
2
1
▾1.47
▴2.8
1
▾1.47
6462
1
▾1.47
5.7/10
13:00
Finished
1300
S. Ishii
A. Rajecki
2
1
▴2.27
▾1.7
2
▾1.7
4636
2
▾1.7
3.7/10
13:00
Finished
1300
S. Ishii
C. Y. Shek
2
0
▴1.66
▾2.23
2
▾2.23
2646
U21.5
▾1.75
4.5/10
S. Ishii vs A. Ferlito, ITF Women - W15 Torello, 11:00, Finished. Match winner odds: 1.34 for S. Ishii, 3.15 for A. Ferlito. AI winner pick: S. Ishii, odds 1.34, confidence 2.1 out of 10. This tip lost. Predicted score: 2-6, 7-5, 6-3. Best AI tip: O20.5, odds 2, confidence 6.3 out of 10. This tip won.
S. Ishii
A. Ferlito
N. Torner vs S. Ishii, ITF Women - W15 Torello, 09:00, Finished. Match winner odds: 1.91 for N. Torner, 1.9 for S. Ishii. AI winner pick: N. Torner, odds 1.91, confidence 5.0 out of 10. This tip lost. Predicted score: 6-4, 3-6, 7-5. Best AI tip: N. Torner, odds 1.91, confidence 5.0 out of 10. This tip lost.
N. Torner
S. Ishii
11:00
Finished
1100
S. Ishii
A. Ferlito
1
2
▴1.34
▾3.15
1
▴1.34
267563
O20.5
2
6.3/10
09:00
Finished
0900
N. Torner
S. Ishii
0
2
▾1.91
▴1.9
1
▾1.91
643675
1
▾1.91
5.0/10
J. Giaccio vs S. Ishii, ITF Women - W15 Logrono, 10:08, Finished. Match winner odds: 3.5 for J. Giaccio, 1.3 for S. Ishii. AI winner pick: J. Giaccio, odds 3.5, confidence 0.8 out of 10. This tip won. Predicted score: 6-4, 6-3. Best AI tip: U21.5, odds 1.62, confidence 1.0 out of 10. This tip won.
J. Giaccio
S. Ishii
V. Losciale vs S. Ishii, ITF Women - W15 Logrono, 11:30, Finished. Match winner odds: 5.5 for V. Losciale, 1.12 for S. Ishii. AI winner pick: S. Ishii, odds 1.12, confidence 4.8 out of 10. This tip won. Predicted score: 3-6, 6-3, 5-7. Best AI tip: S. Ishii, odds 1.12, confidence 4.8 out of 10. This tip won.
V. Losciale
S. Ishii
J. Font vs S. Ishii, ITF Women - W15 Logrono, 13:00, Finished. Match winner odds: 13 for J. Font, 1.02 for S. Ishii. AI winner pick: S. Ishii, odds 1.02, confidence 5.2 out of 10. This tip won. Predicted score: 5-7, 6-3, 2-6. Best AI tip: S. Ishii, odds 1.02, confidence 5.2 out of 10. This tip won.
J. Font
S. Ishii
10:08
Finished
1008
J. Giaccio
S. Ishii
2
0
▾3.5
▴1.3
1
▾3.5
6463
U21.5
▴1.62
1.0/10
11:30
Finished
1130
V. Losciale
S. Ishii
0
2
▾5.5
▴1.12
2
▴1.12
366357
2
▴1.12
4.8/10
13:00
Finished
1300
J. Font
S. Ishii
1
2
▾13
▾1.02
2
▾1.02
576326
2
▾1.02
5.2/10
R. Saigo vs S. Ishii, ITF Women - W35 Aldershot, 13:03, Finished. Match winner odds: 1.9 for R. Saigo, 1.92 for S. Ishii. AI winner pick: R. Saigo, odds 1.9, confidence 2.2 out of 10. This tip won. Predicted score: 7-5, 6-3. Best AI tip: R. Saigo, odds 1.9, confidence 2.2 out of 10. This tip won.
R. Saigo
S. Ishii
S. Ishii vs H. Sato, ITF Women - W35 Aldershot, 13:04, Finished. Match winner odds: 2.02 for S. Ishii, 1.83 for H. Sato. AI winner pick: H. Sato, odds 1.83, confidence 3.8 out of 10. This tip lost. Predicted score: 4-6, 4-6. Best AI tip: H. Sato, odds 1.83, confidence 3.8 out of 10. This tip lost.
S. Ishii
H. Sato
S. Ishii vs F. Gandolfi, ITF Women - W35 Aldershot, 11:42, Finished. Match winner odds: 1.49 for S. Ishii, 2.55 for F. Gandolfi. AI winner pick: F. Gandolfi, odds 2.55, confidence 4.4 out of 10. This tip lost. Predicted score: 1-6, 3-6. Best AI tip: U20.5, odds 1.85, confidence 5.1 out of 10. This tip lost.
S. Ishii
F. Gandolfi
13:03
Finished
1303
R. Saigo
S. Ishii
2
0
▾1.9
▴1.92
1
▾1.9
7563
1
▾1.9
2.2/10
13:04
Finished
1304
S. Ishii
H. Sato
2
1
2.02
1.83
2
1.83
4646
2
1.83
3.8/10
11:42
Finished
1142
S. Ishii
F. Gandolfi
2
1
▴1.49
▾2.55
2
▾2.55
1636
U20.5
▴1.85
5.1/10
Record by surface
Hard
12-14
Grass
0-4
Overall
14-19
Our AI on this player
20 correct of 33
From the matches in our database
About Sayaka Ishii
Sayaka Ishii is a 21-year-old right-handed professional tennis player, currently ranked world No. 519. The serve is the vulnerable side, at 5.3 double faults per match and 58.5% of first-serve points won. Against serve the numbers sit mid-table — 44.5% of points won, 234.8% of break chances taken. Service games rarely slip away: 339.3% of them are held. No surface has produced a winning record so far — Hard 12-14, Grass 0-4.
Lately it has not been coming together — 4 defeats in the last 5 outings. The longest match we have on record ran to 35 games, against A. Rajecki. Predictions cover match winner and score, alongside serve, return and break-point statistics. Most recently seen in our data at ITF Women W50 Yokohama.
Serve & Return
First Serve %
71.4%
1st Serve Won
62.5%
2nd Serve Won
36.1%
Aces / Match
2.1
Double Faults / Match
5.2
Break Pts Saved
44%
Break Pts Converted
133.3%
Return Pts Won
46.7%
Service Hold %
183.6%
Total Pts Won
78%
Records
Last 12 months
0
Titles
0
Finals
1
Semis or better
24
Events played
Tournament Results
ITF W50 Nanao Women
ITF
Semi-Finals
ITF W15 Logrono Women
ITF
Quarter-Finals
ITF W35 Aldershot Women
ITF
Quarter-Finals
ITF W35 Burnie Women
ITF
Quarter-Finals
ITF W35 Kyoto Women
ITF
Quarter-Finals
ITF W15 Torello Women
ITF
Round of 16
ITF W35 Miyazaki 2 Women
ITF
Round of 16
ITF W35 Miyazaki Women
ITF
Round of 16
ITF W35 Osaka Women
ITF
Round of 16
Newport, USA
WTA 125
Round of 32
ITF W100 Takasaki Women
ITF
Round of 32
ITF W35 Launceston Women
ITF
Round of 32
ITF W35 Roehampton Women
ITF
Round of 32
ITF W50 Nottingham Women
ITF
Round of 32
ITF W75 Kofu Women
ITF
Round of 32
ITF W75 Kurume Women
ITF
Round of 32
Tokyo
WTA
Qualifying
Osaka
WTA
Qualifying
Wimbledon, Women
WTA
Qualifying
Birmingham, Great Britain
WTA 125
Qualifying
Ilkley, Great Britain
WTA 125
Qualifying
ITF W100 Gifu Women
ITF
Qualifying
ITF W35 Aldershot 2 Women
ITF
Qualifying
ITF W50 Leiria Women
ITF
Qualifying
Deepest runs first, not by date
Season by season
2026so far
2–3
Won-lost
5
Matches
—
Tiebreaks
1.2
Aces / Match
4.6
Double Faults / Match
First Serve %
65.7%
1st Serve Won
58.6%
2nd Serve Won
42.5%
Break points won
50%
Break Pts Saved
50%
2025
2–5
Won-lost
7
Matches
1–1
Tiebreaks
1.3
Aces / Match
1.7
Double Faults / Match
First Serve %
64.9%
1st Serve Won
58.9%
2nd Serve Won
43.9%
Break points won
45.5%
Break Pts Saved
43.4%
2024
6–4
Won-lost
10
Matches
1–1
Tiebreaks
1.5
Aces / Match
5.4
Double Faults / Match
First Serve %
68%
1st Serve Won
66.1%
2nd Serve Won
48.3%
Break points won
46.4%
Break Pts Saved
60.5%
Season totals from the tour feed, singles only. The won-lost line is the tour's own count and can differ from the record under Predictions, which counts the matches we cover. A dash means the season holds nothing to measure that figure from.
Frequently asked questions
How accurate are the AI predictions for Sayaka Ishii?
+
Our model has graded 33 matches involving Sayaka Ishii and got 20 right — a hit rate of 60.6%. The 20 most recent are listed below, each with the pick we made and how it finished.
Who has Sayaka Ishii played most often?
+
Of the matches we cover, Sayaka Ishii has met Natsumi Kawaguchi most often — 2 times, with a 1-1 record.