Jumpei Yamasaki vs Leo VithoontienPrediction, Head-to-Head Results, and Stats
Jumpei Yamasaki and Leo Vithoontien have met 2 times since 2026; Leo Vithoontien leads 2–0. Their first meeting came at M15 Nishi-Tokyo 1 in 2026 on hard. Vithoontien has won the last 2 meetings. Across all meetings Yamasaki has taken 1 sets to Vithoontien's 4. Their most recent meeting: Leo Vithoontien won at M15 Karuizawa (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Yamasaki | Vithoontien | ||
|---|---|---|---|---|
| Indicator | Jumpei Yamasaki | Leo Vithoontien | ||
| Wins in straight sets | 70% | 7/10 | 72% | 18/25 |
| Wins a set when losing | 29% | 4/14 | 14% | 4/29 |
| Goes to a deciding set | 29% | 7/24 | 20% | 11/54 |
| Covers −1.5 sets as favorite | 30% | 3/10 | 63% | 10/16 |
| Covers +1.5 sets as underdog | 50% | 6/12 | 32% | 11/34 |
| Tiebreak sets won | 50% | 5/10 | 25% | 3/12 |
| Wins after taking set 1 | 82% | 9/11 | 96% | 22/23 |
| Wins 2-0 after taking set 1 | 64% | 7/11 | 78% | 18/23 |
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: 1 of 2 completed meetings ended in straight sets (Yamasaki 0, Vithoontien 1).
Style Matchup
Playing styles and historical archetype record
Yamasaki
🪃 Counterpuncher
Vithoontien
🎾 All-Court
Matchup analysis
The 🎾 All-Court archetype wins about 55% vs 🪃 Counterpuncher across 682 matches in our dataset: a stylistic lean toward Leo Vithoontien.
All-Court players often use tactical versatility and net approach ability to pressure the counterpuncher's elite bp conversion.
Previous meetings
2 career meetings, newest first
May 28, 2026
M15 Karuizawa
C Clay · 2nd Round
Mar 18, 2026
M15 Nishi-Tokyo 1
H Hard · 1st Round
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Yamasaki | Vithoontien | ||
|---|---|---|---|---|
| Outcome | Jumpei Yamasaki | Leo Vithoontien | ||
| 1 or more | 100% | 3/3 | 100% | 6/6 |
| 3 or more | 67% | 2/3 | 33% | 2/6 |
| 5 or more | 33% | 1/3 | 17% | 1/6 |
| 10 or more | 0% | 0/3 | 0% | 0/6 |
| 15 or more | 0% | 0/3 | 0% | 0/6 |
| 20 or more | 0% | 0/3 | 0% | 0/6 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Yamasaki | Vithoontien |
|---|---|---|
| W-L | 3–1 | 1–6 |
| Avg odds | 2.05 | 2.44 |
| ROI % | +44.0% | -81.9% |
| Units P/L | +1.76u | -5.73u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Yamasaki | Vithoontien |
|---|---|---|
| Countries | — | 1 |
| Events | — | 2 |
| Matches | — | 3 |
| Distance | — | — |
| Route | — | USA |
Host country from the tournament each match was played in, over the last 30 days. 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 5 shared opponents, both Yamasaki and Vithoontien posted a 40% win rate.
| Opponent | Yamasaki | Vithoontien |
|---|---|---|
| Naoki Nakagawa | W 63 61 | L 46 46 |
| Hikaru Shiraishi | L 36 76 57 | L 16 67 |
| Ryo Minakata | W 61 63 | W 60 63 |
| Takuya Kumasaka | L 26 26 | L 36 26 |
| Masamichi Imamura | L 06 46 | W 61 64 |
Recent Form
Last five matches per player
Jangjun Kim
M15 Tokyo · Quarterfinals
Jun 12
Hayden Jones
M15 Tokyo · 2nd Round
Jun 11
Colin Sinclair
M15 Tokyo · 1st Round
Jun 10
Asahi Harazaki
Futures 2026
Jun 8
Natsuki Yamamoto
Futures 2026
Jun 7
Leo Vithoontien
M15 Karuizawa · 2nd Round
May 28
Ryo Minakata
M15 Karuizawa · Round of 32
May 27
Ryo Minakata
M15 Karuizawa · 1st Round
May 26
Tyler Bowers
M25 East Lansing · 1st Round
Aug 12
Cruz Hewitt
M25 Southaven · 2nd Round
Aug 6
Jon Gamble
M25 Southaven · 1st Round
Aug 5
Ilija Palavestra
M25 Edwardsville · 1st Round
Jul 29
Cesar Bouchelaghem
Granby challenger
Jul 12
Naoki Nakagawa
M15 Tokyo · 1st Round
Jun 16
Hikaru Shiraishi
M15 Tokyo · 1st Round
Jun 10
Jake Delaney
M15 Karuizawa · Quarterfinals
May 29
Rivalry momentum
Cumulative head-to-head lead over time
Win rate
Matches, sets and games won · Last 12 months · 25–54 matches
| Metric | Yamasaki | Vithoontien |
|---|---|---|
| Matches won | 44% | 46% |
| Sets won | 45% | 45% |
| Games won | 49% | 49% |
Record by tier
Head-to-head record by tournament tier
| Stage | Yamasaki | Vithoontien |
|---|---|---|
| ITF M15 | 0 | 2 |
By surface
Head-to-head record per surface
| Surface | Yamasaki | Vithoontien |
|---|---|---|
| Hard | 0 | 1 |
| Clay | 0 | 1 |
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