Sayaka Ishii (石井さやか , Ishii Sayaka , born 31 August 2005) is a Japanese professional tennis player. She has career-high rankings of world No. 196 in singles, achieved on 30 December 2024, and No. 345 in doubles, achieved on 21 October 2024.
Sayaka Ishii Native name 石井さやか Country (sports) Japan Born (2005-08-31 ) 31 August 2005 (age 19) Tokyo , JapanHeight 1.73 m (5 ft 8 in) Plays Right-handed (two-handed backhand) Prize money US$ 79,338 Career record 93–52 Highest ranking No. 196 (30 December 2024) Current ranking No. 204 (6 January 2025) Australian Open Q2 (2025 ) Career record 20–21 Highest ranking No. 345 (21 October 2024) Current ranking No. 346 (6 January 2025) Last updated on: 6 January 2025.
Key
W
F
SF
QF
#R
RR
Q#
P#
DNQ
A
Z#
PO
G
S
B
NMS
NTI
P
NH
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (P#) preliminary round; (DNQ) did not qualify; (A) absent; (Z#) Davis/Fed Cup Zonal Group (with number indication) or (PO) play-off; (G) gold, (S) silver or (B) bronze Olympic/Paralympic medal; (NMS) not a Masters tournament; (NTI) not a Tier I tournament; (P) postponed; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.
To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.
Singles: 3 (1 title, 2 runner–ups)
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Legend
W25/35 tournaments (1–1)
W15 tournaments (0–1)
Finals by surface
Hard (1–2)
Result
W–L
Date
Tournament
Tier
Surface
Opponent
Score
Loss
0–1
Jun 2022
ITF Monastir, Tunisia
W15
Hard
Francesca Curmi
2–6, 6–4, 5–7
Loss
0–2
Oct 2023
ITF Redding, US
W25
Hard
Iva Jovic
4–6, 2–6
Win
1–2
Apr 2024
ITF Osaka, Japan
W35
Hard
Stacey Fung
6–1, 3–6, 6–3
Doubles: 2 (1 title, 1 runner-up)
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Legend
W100 tournaments (1–0)
W35 tournaments (0–1)
Finals by surface
Hard (1–1)
^ Uchida, Akatsuki (21 May 2024). "石井琢朗&プロテニスプレーヤー石井さやか・父娘対談《前編》「男の子だったら間違いなく野球選手になったんじゃないかな」" . Yahoo Japan (in Japanese). Retrieved 29 July 2024 .
^ "テニス・石井さやか、念願のプロ初優勝 元プロ野球選手の父の教え" . 毎日新聞 (in Japanese). 20 April 2024. Retrieved 29 July 2024 .
^ 七緒, 金光 (7 May 2023). "夢はグランドスラム優勝! テニスプレイヤー石井さやか選手 - 渋谷新聞" . 渋谷新聞 (in Japanese). Retrieved 29 July 2024 .
^ McLean, Ross (17 October 2022). "Osaka Mayor's Cup: key learnings from the latest junior Grade A event" . International Tennis Federation . Retrieved 29 July 2024 .
^ Ribeiro Lança, Gaspar (27 July 2024). "Sayaka Ishii e Naho Sato celebram lado a lado pela primeira vez na Figueira da Foz" . Raquetc (in Portuguese). Retrieved 29 July 2024 .
^ Smoliński, Rafał (18 August 2024). "Kolejny turniej w stanie Ohio. Trudne zadanie obrończyni tytułu" . Sportowe Fakty (in Polish). Retrieved 19 August 2024 .
^ "Siniakova saves three match points, escapes teenage qualifier Ishii" . Women's Tennis Association . 21 August 2024. Retrieved 21 October 2024 .
^ "MATCH POINT: World No. 279 Sayaka Ishii demolishes No. 158 Sara Saito in Tokyo first round" . Tennis.com . 22 October 2024. Retrieved 23 October 2024 .
^ "Teenage qualifier Ishii earns first career tour-level win in Tokyo" . Women's Tennis Association . 22 October 2024. Retrieved 23 October 2024 .
^ "Tokyo: Ishii books spot in second round" . Tennis Majors . 22 October 2024. Retrieved 22 October 2024 .
^ "Japanese qualifier Ishii, 19, battles past Sonmez into Tokyo quarters" . Women's Tennis Association . 23 October 2024. Retrieved 23 October 2024 .
^ "Andreescu advances to Tokyo quarters as Haddad Maia retires due to injury" . Women's Tennis Association . 23 October 2024. Retrieved 23 October 2024 .
^ "Tokyo Open: Ishii knocks out Saito" . Tennis Majors . 22 October 2024. Retrieved 23 October 2024 .
^ Coskrey, Jason (23 October 2024). "Leylah Fernandez into quarters in Tokyo as teen Sayaka Ishii continues impressive run" . The Japan Times . Retrieved 23 October 2024 .
^ "WTA roundup: Sofia Kenin upsets Daria Kasatkina in Tokyo" . Reuters . 25 October 2024. Retrieved 25 October 2024 .
^ "Tokyo Open: Shnaider reaches last four" . Tennis Majors. 25 October 2024. Retrieved 25 October 2024 .
^ Nakamoto, Morichika (25 October 2024). "Tennis: Japanese teen Ishii withdraws from Pan Pacific Open q'finals" . Kyodo News . Retrieved 27 October 2024 .
^ Macpherson, Alex (28 October 2024). "Rankings Watch: Kenin, Danilovic surge; four new career highs in Top 20" . Women's Tennis Association . Retrieved 7 January 2025 .