Player data updated: 2026-10-17 16:37 UTC
Sayaka Ishii
Sayaka Ishii represents Japan on the WTA Tour and is ranked No. 466, having reached a career high of No. 188. She most recently defeated Elina Avanesyan by retirement in the Japan Women's Open first qualifying round on October 17, 2026. Her next scheduled opponent is Mary Stoiana in the Japan Women's Open first qualifying round.
Peak singles rank
188 (Mar 17, 2025)
Elo peak
1580 (31st percentile)
Singles record
2–3 (40.0%)
Singles titles
0
Prize money
$239,568
Records cover recorded main-draw singles results in TennisDB's WTA event archive, including credited walkovers; qualifying is shown separately below.
WTA Matches full match log →
| Opponent | Score | Result | H2H | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|---|
| Mary Stoiana | Scheduled | — | H2H | Match data | Oct 18, 2026 | Q1 | Japan Women's Open | WTA 250 | Hard |
| Elina Avanesyan | 6-3 (ret.) | W | H2H | Match data | Oct 17, 2026 | Q1 | Japan Women's Open | WTA 250 | Hard |
| Kaitlin Quevedo | 0-6 3-6 | L | H2H | Match data | Jun 23, 2026 | Q1 | Wimbledon | Grand Slam | Grass |
| Emma Raducanu | 2-6 1-6 | L | H2H | Match data | Mar 19, 2025 | R128 | Miami Open | WTA 1000 | Hard |
| Sachia Vickery | 6-7(2) 4-6 | L | H2H | Match data | Jan 8, 2025 | Qualifying | Australian Open | Grand Slam | Hard |
Qualifying matches are shown here but excluded from main-draw summaries and leaderboards.
Rivals all rivalries →
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Emma Raducanu | 0 | 1 | 1 | Mar 19, 2025 | H2H |
| Diana Shnaider | 0 | 1 | 1 | Oct 26, 2024 | H2H |
| Zeynep Sonmez | 1 | 0 | 1 | Oct 25, 2024 | H2H |
| Sara Saito | 1 | 0 | 1 | Oct 24, 2024 | H2H |
| Katerina Siniakova | 0 | 1 | 1 | Aug 21, 2024 | H2H |
Career Results
Career Results by Surface
| Season | Age | Type | Hard | Clay | Grass | Total | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 2022 | 16 | Qualifying | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2023 | 17 | Qualifying | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2024 | 18 | Qualifying | 4 | 2 | 6 | 66.7% | — | — | — | — | — | — | — | — | 4 | 2 | 6 | 66.7% |
| 2024 | 18 | WTA | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | 2 | 2 | 4 | 50.0% |
| 2025 | 19 | Qualifying | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2025 | 19 | WTA | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2026 | 20 | Qualifying | 1 | 0 | 1 | 100.0% | — | — | — | — | 0 | 1 | 1 | 0.0% | 1 | 1 | 2 | 50.0% |
| Career | — | — | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — | 2 | 3 | 5 | 40.0% |
Career Results by Opponent Rank
Performance Stats
| Season | Age | Sample | Aces/M | DFs/M | 1st Sv% | 1st Sv Pts% | 2nd Sv Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | 18 | 3/4 | 0.3 | 6.0 | 60.5% | 64.4% | 47.3% | 58.3% | 42.9% | 57.5% | 49.4% |
| 2025 | 19 | 1/1 | 0.0 | 1.0 | 72.7% | 43.8% | 33.3% | 16.7% | 100.0% | 40.9% | 30.0% |
| Career | 4/5 | 0.3 | 4.8 | 63.6% | 59.2% | 43.8% | 47.9% | 57.1% | 53.3% | 44.6% |
Detailed serve and return statistics available for 4/5 (80.0%) of Sayaka Ishii's WTA main draw matches.
Advanced Stats
| Season | Age | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | 16 | 1480 | 95.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2023 | 17 | 1472 | 99.9 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2024 | 18 | 1572 | 119.4 | +0.69 | +1.59 | 1.162 | 53.4% | +18 | — | — | 62.5% | +1.50 | 1–1 | 1–1 | — | +0.19 |
| 2025 | 19 | 1566 | 99.7 | +0.48 | +0.58 | 0.508 | 35.7% | — | — | — | 0.0% | -4.50 | — | — | — | -0.08 |
| 2026 | 20 | 1522 | 99.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1580 | 108.9 | +0.64 | +1.34 | 0.955 | 48.9% | +18 | — | — | 50.0% | +0.30 | 1–1 | 1–1 | — | +2.75 |
Tournament Results by Category
Grand Slams
| Season | Age | W | W-L Win % |
|---|---|---|---|
| 2026 | 20 | Q1 | 0–1 (0%) |
| W-L | 0–1 (0%) |
0–1 (0%) |
WTA 1000
| Season | Age | MIA | W-L Win % |
|---|---|---|---|
| 2024 | 18 | Q1 | 0–1 (0%) |
| 2025 | 19 | R128 | 0–1 (0%) |
| W-L | 0–2 (0%) |
0–2 (0%) |
WTA 500
| Season | Age | PAN | W-L Win % |
|---|---|---|---|
| 2022 | 16 | Q1 | 0–1 (0%) |
| 2023 | 17 | Q1 | 0–1 (0%) |
| 2024 | 18 | QF | 4–1 (80%) |
| W-L | 4–3 (57%) |
4–3 (57%) |
WTA 250
| Season | Age | TEN | JAP | W-L Win % |
|---|---|---|---|---|
| 2024 | 18 | R32 | Q1 | 2–2 (50%) |
| 2026 | 20 | — | Q1 | 1–0 (100%) |
| W-L | 2–1 (67%) | 1–1 (50%) |
3–2 (60%) |
Results show the best round reached per tournament and season.
WTA Ranking History full ranking history →
Career high
188
Career-high date
Mar 17, 2025
First Top 100
—
First Top 50
—
First Top 20
—
First Top 10
—
Ranking History Matrix
Similar Players
Other WTA players with comparable peak level, era, career record, and career scale.
| Player | Country | Peak ranking | Peak Elo | M | W | L | Win % | Prize money | Titles | GS | W1000 | Years | Rivalries | Match log |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wakana Sonobe (active player) | JPN | #224 | 1,567 | 5 | 2 | 3 | 40.0% | $88,707 | 0 | 0 | 0 | 2025–2025 | Rivalries | Match log |
| Sara Saito (active player) | JPN | #150 | 1,560 | 5 | 2 | 3 | 40.0% | $318,759 | 0 | 0 | 0 | 2024–2024 | Rivalries | Match log |
| Han Shi (active player) | CHN | #200 | 1,618 | 9 | 3 | 6 | 33.3% | $264,265 | 0 | 0 | 0 | 2024–2026 | Rivalries | Match log |
| Lucie Havlickova (active player) | CZE | #182 | 1,595 | 10 | 3 | 7 | 30.0% | $406,744 | 0 | 0 | 0 | 2021–2026 | Rivalries | Match log |
| Sada Nahimana (active player) | BDI | #212 | 1,500 | 6 | 2 | 4 | 33.3% | $247,005 | 0 | 0 | 0 | 2023–2026 | Rivalries | Match log |
| Maria Mateas (active player) | USA | #190 | 1,500 | 7 | 2 | 5 | 28.6% | $265,029 | 0 | 0 | 0 | 2016–2025 | Rivalries | Match log |
| Hanna Chang (active player) | USA | #179 | 1,508 | 2 | 1 | 1 | 50.0% | $508,787 | 0 | 0 | 0 | 2025–2025 | Rivalries | Match log |
| Caroline Werner (active player) | GER | #221 | 1,532 | 3 | 1 | 2 | 33.3% | $203,831 | 0 | 0 | 0 | 2025–2025 | Rivalries | Match log |
| Lina Gjorcheska (active player) | MKD | #181 | 1,509 | 4 | 1 | 3 | 25.0% | $673,048 | 0 | 0 | 0 | 2017–2026 | Rivalries | Match log |
| Elena Pridankina (active player) | RUS | #168 | 1,670 | 10 | 3 | 7 | 30.0% | $728,897 | 0 | 0 | 0 | 2024–2026 | Rivalries | Match log |
| Anna Siskova (active player) | CZE | #161 | 1,545 | 6 | 3 | 3 | 50.0% | $694,424 | 0 | 0 | 0 | 2023–2026 | Rivalries | Match log |
| Yasmine Kabbaj (active player) | MAR | #255 | 1,549 | 5 | 2 | 3 | 40.0% | $94,618 | 0 | 0 | 0 | 2024–2026 | Rivalries | Match log |
Frequently Asked Questions
- How old is Sayaka Ishii?
- Sayaka Ishii is 21 years old, born on August 31, 2005.
- Which country does Sayaka Ishii represent?
- Sayaka Ishii represents Japan in TennisDB's WTA records.
- Is Sayaka Ishii left-handed or right-handed?
- Sayaka Ishii plays right-handed.
- How many Grand Slam singles titles has Sayaka Ishii won?
- Sayaka Ishii has not won a Grand Slam singles title.
- How many WTA 1000 titles has Sayaka Ishii won?
- TennisDB does not group any of Sayaka Ishii's titles under the modern WTA 1000 category.
- What is Sayaka Ishii's highest WTA ranking?
- Sayaka Ishii's career-high WTA singles ranking is world No. 188, first achieved on March 17, 2025.
- What is Sayaka Ishii's career win-loss record?
- Sayaka Ishii has a career WTA singles record of 2 wins and 3 losses (40.0%).
- How much career prize money has Sayaka Ishii earned?
- Sayaka Ishii has earned at least $239,568 in career prize money from professional tennis.
- Which seasons of Sayaka Ishii's career appear in TennisDB?
- Sayaka Ishii appears in TennisDB's WTA main-tour match records from 2024 through 2025.
- Who has Sayaka Ishii faced most often?
- Sayaka Ishii's most frequent opponent is Emma Raducanu, with a head-to-head record of 0–1 across 1 meeting.