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 | 63% | 10/16 | 68% | 15/22 |
| Wins a set when losing | 21% | 3/14 | 20% | 5/25 |
| Goes to a deciding set | 30% | 9/30 | 26% | 12/47 |
| Covers −1.5 sets as favorite | 45% | 5/11 | 60% | 9/15 |
| Covers +1.5 sets as underdog | 38% | 5/13 | 37% | 11/30 |
| Tiebreak sets won | 40% | 4/10 | 25% | 3/12 |
| Wins after taking set 1 | 93% | 13/14 | 90% | 19/21 |
| Wins 2-0 after taking set 1 | 71% | 10/14 | 71% | 15/21 |
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
💥 Big Hitter
Vithoontien
🎾 All-Court
Matchup analysis
💥 Big Hitter vs 🎾 All-Court is historically tight (52% vs 48%, 656 matches). Neither style has a clear edge, so form, surface, and the head-to-head matter most.
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
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 | 0–2 | 1–4 |
| Avg odds | 5.40 | 2.96 |
| ROI % | -100.0% | -74.6% |
| Units P/L | -2.00u | -3.73u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Common opponents
Results vs. opponents both players faced · Last 12 months
Yamasaki has a higher win rate against shared opponents (50% vs Vithoontien's 25%).
| Opponent | Yamasaki | Vithoontien |
|---|---|---|
| Naoki Nakagawa | W 63 61 | L 46 46 |
| Hikaru Shiraishi | L 36 76 57 | L 16 67 |
| Takuya Kumasaka | L 26 26 | L 36 26 |
| Krittin Koaykul | W 60 61 | W 61 61 |
Recent Form
Last five matches per player
Martin Borisiouk
Wuning 3 Challenger · 1st Round Qualifying
Oct 4
Max Purcell
M15 Luan · 1st Round
Sep 29
Taisei Ichikawa
M15 Bali · 1st Round
Jul 21
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
M15 Tokyo · 3rd Round Qualifying
Jun 8
Natsuki Yamamoto
Futures 2026
Jun 7
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
Stefan Kozlov
Bloomfield Hills Challenger · 1st Round Qualifying
Jul 19
Cesar Bouchelaghem
Granby Challenger · 1st Round Qualifying
Jul 12
Naoki Nakagawa
M15 Tokyo · 1st Round
Jun 16
Hikaru Shiraishi
M15 Tokyo · 1st Round
Jun 10
Rivalry momentum
Cumulative head-to-head lead over time
Win rate
Matches, sets and games won · Last 12 months · 30–47 matches
| Metric | Yamasaki | Vithoontien |
|---|---|---|
| Matches won | 53% | 47% |
| Sets won | 51% | 46% |
| Games won | 52% | 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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