Player data updated: 2026-10-17 16:37 UTC
Haruka Kaji
Instagram profile (opens in new tab)Haruka Kaji represents Japan on the WTA Tour and is ranked No. 278, having reached a career high of No. 219. She most recently retired against Taylah Preston in the Japan Women's Open first qualifying round on October 17, 2026.
Singles ranking
278
Career singles high
219 (May 19, 2025)
Elo peak
1506 (7th percentile)
Singles record
0–0
Singles titles
0
Prize money
$302,312
YTD W-L
—
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 |
|---|---|---|---|---|---|---|---|---|---|
| Taylah Preston | 1-3 (ret.) | L | H2H | Match data | Oct 17, 2026 | Q1 | Japan Women's Open | WTA 250 | Hard |
| Darya Astakhova | 2-6 7-6(6) 2-6 | L | H2H | Match data | Sep 19, 2026 | Q1 | Korea Open | WTA 250 | Hard |
| Kristiana Sidorova | 1-6 2-6 | L | H2H | Match data | Oct 26, 2025 | Q2 | Hong Kong Open | WTA 250 | Hard |
| Kallista Liu | 7-6(4) 6-4 | W | H2H | Match data | Oct 25, 2025 | Q1 | Hong Kong Open | WTA 250 | Hard |
| Renata Zarazua | 1-6 6-7(5) | L | H2H | Match data | Jan 3, 2025 | Q1 | Hobart International | WTA 250 | Hard |
Qualifying matches are shown here but excluded from main-draw summaries and leaderboards.
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 % | |||
| 2017 | 22 | Qualifying | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2018 | 23 | Qualifying | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2019 | 24 | Qualifying | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2023 | 28 | Qualifying | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | 1 | 2 | 3 | 33.3% |
| 2024 | 29 | Qualifying | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | 0 | 2 | 2 | 0.0% |
| 2025 | 30 | Qualifying | 1 | 3 | 4 | 25.0% | — | — | — | — | — | — | — | — | 1 | 3 | 4 | 25.0% |
| 2026 | 31 | Qualifying | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | 0 | 2 | 2 | 0.0% |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | 22 | 1490 | 100.1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2018 | 23 | 1475 | 93.1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2019 | 24 | 1457 | 96.6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2023 | 28 | 1450 | 90.4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2024 | 29 | 1468 | 97.0 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2025 | 30 | 1447 | 93.2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2026 | 31 | 1394 | 96.4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1506 | 87.7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Tournament Results by Category
WTA 500
| Season | Age | KOR | PAN | PAN | W-L Win % |
|---|---|---|---|---|---|
| 2017 | 22 | — | — | Q1 | 0–1 (0%) |
| 2018 | 23 | — | Q1 | — | 0–1 (0%) |
| 2024 | 29 | Q1 | Q1 | — | 0–2 (0%) |
| W-L | 0–1 (0%) | 0–2 (0%) | 0–1 (0%) |
0–4 (0%) |
WTA 250
| Season | Age | ASB | HKG | KOR | HOB | HUA | JAP | TIA | W-L Win % |
|---|---|---|---|---|---|---|---|---|---|
| 2019 | 24 | — | — | — | — | — | — | Q1 | 0–1 (0%) |
| 2023 | 28 | — | — | — | — | Q1 | Q2 | — | 1–2 (33%) |
| 2025 | 30 | Q1 | Q2 | — | Q1 | — | — | — | 1–3 (25%) |
| 2026 | 31 | — | — | Q1 | — | — | Q1 | — | 0–2 (0%) |
| W-L | 0–1 (0%) | 1–1 (50%) | 0–1 (0%) | 0–1 (0%) | 0–1 (0%) | 1–2 (33%) | 0–1 (0%) |
2–8 (20%) |
Results show the best round reached per tournament and season.
WTA Ranking History full ranking history →
Current rank
278
Career high
219
Career-high date
May 19, 2025
First Top 100
—
First Top 50
—
First Top 20
—
First Top 10
—
Ranking History Matrix
Frequently Asked Questions
- How old is Haruka Kaji?
- Haruka Kaji is 32 years old, born on September 25, 1994.
- Which country does Haruka Kaji represent?
- Haruka Kaji represents Japan in TennisDB's WTA records.
- Does Haruka Kaji use a one-handed or two-handed backhand?
- Haruka Kaji uses a two-handed backhand.
- Is Haruka Kaji left-handed or right-handed?
- Haruka Kaji plays right-handed.
- How many Grand Slam singles titles has Haruka Kaji won?
- Haruka Kaji has not won a Grand Slam singles title.
- How many WTA 1000 titles has Haruka Kaji won?
- TennisDB does not group any of Haruka Kaji's titles under the modern WTA 1000 category.
- What is Haruka Kaji's highest WTA ranking?
- Haruka Kaji's career-high WTA singles ranking is world No. 219, first achieved on May 19, 2025.
- What is Haruka Kaji's career win-loss record?
- Haruka Kaji has a career WTA singles record of 0 wins and 0 losses.
- How much career prize money has Haruka Kaji earned?
- Haruka Kaji has earned at least $302,312 in career prize money from professional tennis.