Jumpei Yamasaki and Soonwoo Kwon have met 1 time since 2017; Soonwoo Kwon leads 1–0. Their most recent meeting: Soonwoo Kwon won at Kyoto (2017).
Playing styles and historical archetype record
Yamasaki
🪃 Counterpuncher
Kwon
💥 Big Hitter
Matchup analysis
The 💥 Big Hitter archetype wins about 54% vs 🪃 Counterpuncher across 4,242 matches in our dataset — a stylistic lean toward Soonwoo Kwon.
Big Hitter players often use power groundstrokes and high winner count to pressure the counterpuncher's elite bp conversion.
1 career meeting, newest first
Hit rates on common betting markets · Last 90 days
| Outcome | Yamasaki | Kwon | ||
|---|---|---|---|---|
| Outcome | Jumpei Yamasaki | Soonwoo Kwon | ||
| 1 or more | 100% | 8/8 | 100% | 14/14 |
| 3 or more | 75% | 6/8 | 100% | 14/14 |
| 5 or more | 75% | 6/8 | 86% | 12/14 |
| 10 or more | 25% | 2/8 | 43% | 6/14 |
| 15 or more | 0% | 0/8 | 0% | 0/14 |
| 20 or more | 0% | 0/8 | 0% | 0/14 |
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Yamasaki | Kwon |
|---|---|---|
| W-L | 1–3 | 11–3 |
| Avg odds | 2.01 | 1.67 |
| ROI % | -73.5% | +30.8% |
| Units P/L | -2.94u | +4.31u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Last five matches per player
Jangjun Kim
Futures 2026 ·
Jun 12
Hayden Jones
Futures 2026 ·
Jun 11
Colin Sinclair
Futures 2026 ·
Jun 10
Asahi Harazaki
Futures 2026 ·
Jun 8
Natsuki Yamamoto
Futures 2026 ·
Jun 7
Ryo Minakata
M15 Karuizawa · Round of 32
May 25
Leo Vithoontien
M15 Karuizawa · Round of 16
May 25
Takuya Kumasaka
M25 Nakhon Pathom · Round of 32
May 4
Otto Virtanen
Lexus Nottingham Open · Round of 32
Jun 16
Millen Hurrion
Lexus Nottingham Open · 1st Round Qualifying
Jun 13
Anton Matusevich
Lexus Nottingham Open · 2nd Round Qualifying
Jun 1
Mark Lajal
Wuxi Open · Semifinals
May 9
Yunchaokete Bu
Wuxi Open · Final
May 9
Akira Santillan
Wuxi Open · Quarterfinals
May 8
Alafia Ayeni
Wuxi Open · Round of 16
May 7
Kaichi Uchida
Wuxi Open · Round of 32
May 5
Matches, sets and games won · Last 12 months · 22–23 matches
| Metric | Yamasaki | Kwon |
|---|---|---|
| Matches won | 39% | 82% |
| Sets won | 41% | 78% |
| Games won | 48% | 59% |
Head-to-head record by tournament tier
| Stage | Yamasaki | Kwon |
|---|---|---|
| ATP Challenger Tour | 0 | 1 |
Head-to-head record per surface
| Surface | Yamasaki | Kwon |
|---|---|---|
| Hard | 0 | 1 |
