Haruka Kaji and Sofia Costoulas have met 1 time since 2026; Sofia Costoulas leads 1–0. Their most recent meeting: Sofia Costoulas won at W75 Kofu (2026).
Playing styles and historical archetype record
Kaji
🪃 Counterpuncher
Costoulas
👑 The Complete Package
Matchup analysis
The 👑 The Complete Package archetype wins about 57% vs 🪃 Counterpuncher across 4,538 matches in our dataset — a stylistic lean toward Sofia Costoulas.
The Complete Package players often use elite serve & return and high bp conversion to pressure the counterpuncher's elite bp conversion.
1 career meeting, newest first
Hit rates on common betting markets · Last 90 days
| Outcome | Kaji | Costoulas | ||
|---|---|---|---|---|
| Outcome | Haruka Kaji | Sofia Costoulas | ||
| 1 or more | 62% | 8/13 | 60% | 3/5 |
| 3 or more | 31% | 4/13 | 0% | 0/5 |
| 5 or more | 8% | 1/13 | 0% | 0/5 |
| 10 or more | 0% | 0/13 | 0% | 0/5 |
| 15 or more | 0% | 0/13 | 0% | 0/5 |
| 20 or more | 0% | 0/13 | 0% | 0/5 |
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Kaji | Costoulas |
|---|---|---|
| W-L | 8–7 | 3–4 |
| Avg odds | 2.09 | 2.50 |
| ROI % | -6.9% | +22.6% |
| Units P/L | -1.03u | +1.58u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Results vs. opponents both players faced · Last 12 months
Across 1 shared opponent, both Kaji and Costoulas posted a 0% win rate.
| Opponent | Kaji | Costoulas |
|---|---|---|
| Xinyu Gao | L 26 64 36 | L 57 26 |
Last five matches per player
Dayeon Back
Taipei 2 ITF ·
Jun 21
Yuno Kitahara
Taipei 2 ITF ·
Jun 20
Ya Yi Yang
Wuning 4 ITF ·
Jun 10
Rina Saigo
W100 Takasaki · Quarterfinals
May 18
Valentina Ryser
W100 Takasaki · Semifinals
May 18
Fangran Tian
W100 Takasaki · Round of 16
May 18
Misaki Matsuda
W100 Takasaki · Round of 32
May 18
Makoto Yamaguchi
Kurume ITF ·
May 14
Storm Hunter
Wimbledon ·
Jun 23
Sapfo Sakellaridi
Foggia ·
Jun 1
Nadia Podoroska
Zaragoza ITF ·
May 28
Justina Mikulskyte
Zaragoza ITF ·
May 27
Justina Mikulskyte
W75 Zaragoza · Round of 32
May 25
Nadia Podoroska
W75 Zaragoza · Round of 16
May 25
Hanyu Guo
French Open ·
May 21
Mai Hontama
French Open ·
May 20
Matches, sets and games won · Last 12 months · 37–44 matches
| Metric | Kaji | Costoulas |
|---|---|---|
| Matches won | 52% | 62% |
| Sets won | 52% | 60% |
| Games won | 49% | 55% |
Head-to-head record by tournament tier
| Stage | Kaji | Costoulas |
|---|---|---|
| ITF W75 | 0 | 1 |
Head-to-head record per surface
| Surface | Kaji | Costoulas |
|---|---|---|
| Hard | 0 | 1 |
