Rira Kosaka vs Soo Ha JangPrediction, Head-to-Head Results, and Stats
Rira Kosaka and Soo Ha Jang have met 1 time since 2026; Rira Kosaka leads 1–0. Across all meetings Kosaka has taken 2 sets to Jang's 1. Their most recent meeting: Rira Kosaka won at W15 Yeongwol (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Kosaka | Ha Jang | ||
|---|---|---|---|---|
| Indicator | Rira Kosaka | Soo Ha Jang | ||
| Wins in straight sets | 78% | 14/18 | 62% | 8/13 |
| Wins a set when losing | 47% | 9/19 | 46% | 6/13 |
| Goes to a deciding set | 35% | 13/37 | 42% | 11/26 |
| Covers −1.5 sets as favorite | 33% | 1/3 | 0% | 0/6 |
| Covers +1.5 sets as underdog | 69% | 11/16 | 67% | 2/3 |
| Tiebreak sets won | 33% | 1/3 | 80% | 4/5 |
| Wins after taking set 1 | 84% | 16/19 | 86% | 12/14 |
| Wins 2-0 after taking set 1 | 74% | 14/19 | 57% | 8/14 |
Colored rows are higher-is-better: green above 50%, red below. Favorite/underdog set by book odds; cover rows count only matches with odds on record. Head-to-head: 0 of 1 completed meetings ended in straight sets (Kosaka 0, Ha Jang 0).
Style Matchup
Playing styles and historical archetype record
Kosaka
🧱 The Wall
Jang
🪃 Counterpuncher
Matchup analysis
The 🪃 Counterpuncher archetype wins about 61% vs 🧱 The Wall across 2,566 matches in our dataset: a stylistic lean toward Soo Ha Jang.
Counterpuncher players often use elite bp conversion and strong return game to pressure the the wall's elite returner.
Previous meetings
1 career meeting, newest first
Sep 7, 2026
W15 Yeongwol
H Hard · 2nd Round Qualifying
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Kosaka | Jang | ||
|---|---|---|---|---|
| Outcome | Rira Kosaka | Soo Ha Jang | ||
| 1 or more | 44% | 4/9 | 50% | 4/8 |
| 3 or more | 11% | 1/9 | 0% | 0/8 |
| 5 or more | 0% | 0/9 | 0% | 0/8 |
| 10 or more | 0% | 0/9 | 0% | 0/8 |
| 15 or more | 0% | 0/9 | 0% | 0/8 |
| 20 or more | 0% | 0/9 | 0% | 0/8 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Kosaka | Jang |
|---|---|---|
| W-L | 3–4 | 3–1 |
| Avg odds | 4.13 | 1.80 |
| ROI % | -15.4% | +8.5% |
| Units P/L | -1.08u | +0.34u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Kosaka | Jang |
|---|---|---|
| Countries | 3 | 2 |
| Events | 3 | 2 |
| Matches | 8 | 3 |
| Distance | — | — |
| Route | AUT → ECU → POR | POR → COL |
Host country from each tournament in the last 30 days, including the current event even when a player arrived on a bye. Route is the order of countries visited; consecutive stops in the same country are shown once. Distance is the great-circle total between host cities, shown only when every stop in the window is geocoded. A rough fatigue signal, not a headline stat.
Common opponents
Results vs. opponents both players faced · Last 12 months
Across 3 shared opponents, both Kosaka and Jang posted a 100% win rate.
| Opponent | Kosaka | Jang |
|---|---|---|
| Natsuho Arakawa | W 36 63 62 | W 63 36 62 |
| Mari Muto | W 62 76 | W 62 62 |
| Aditi Rawat | W 64 62 | W 62 61 |
Recent Form
Last five matches per player
Haruka Kaji
W35 Wagga Wagga · 1st Round
Oct 7
Zoe Theodorakopoulos
W35 Wagga Wagga · 2nd Round Qualifying
Oct 5
Sera Nishimoto
W35 Wagga Wagga · 3rd Round Qualifying
Oct 5
Haruna Arakawa
W35 Wagga Wagga · 1st Round
Sep 30
Remika Ohashi
W35 Wagga Wagga · 3rd Round Qualifying
Sep 29
Shante Lai
W35 Wagga Wagga · 2nd Round Qualifying
Sep 28
Sayaka Ishii
W50 Nanao · 3rd Round Qualifying
Sep 22
Natsuho Arakawa
W50 Nanao · 1st Round Qualifying
Sep 21
Varvara Panshina
W15 Maanshan · 2nd Round
Oct 8
Ekaterina Kuznetsova
W15 Maanshan · 1st Round
Oct 6
Ke Ren
W15 Maanshan · 1st Round
Sep 30
Rira Kosaka
W15 Yeongwol · 2nd Round Qualifying
Sep 7
Sohee Choi
W15 Yeongwol · 1st Round Qualifying
Sep 6
Kamonwan Yodpetch
W15 Yeongwol · Quarterfinals
Sep 4
Su Jeong Jang
W15 Yeongwol · 2nd Round
Sep 3
Nagi Hanatani
W15 Yeongwol · 1st Round
Sep 2
Win rate
Matches, sets and games won · Last 12 months · 27–37 matches
| Metric | Kosaka | Jang |
|---|---|---|
| Matches won | 49% | 48% |
| Sets won | 52% | 50% |
| Games won | 50% | 49% |
Record by tier
Head-to-head record by tournament tier
| Stage | Kosaka | Jang |
|---|---|---|
| ITF W15 | 1 | 0 |
By surface
Head-to-head record per surface
| Surface | Kosaka | Jang |
|---|---|---|
| Hard | 1 | 0 |
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