Jumpei Yamasaki vs Krittin KoaykulPrediction, Head-to-Head Results, and Stats
Jumpei Yamasaki and Krittin Koaykul have met 1 time since 2026; Jumpei Yamasaki leads 1–0. Across all meetings Yamasaki has taken 2 sets to Koaykul's 0. Their most recent meeting: Jumpei Yamasaki won at M25 Nakhon Pathom (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Yamasaki | Koaykul | ||
|---|---|---|---|---|
| Indicator | Jumpei Yamasaki | Krittin Koaykul | ||
| Wins in straight sets | 63% | 10/16 | 100% | 2/2 |
| Wins a set when losing | 21% | 3/14 | 0% | 0/5 |
| Goes to a deciding set | 30% | 9/30 | 0% | 0/7 |
| Covers −1.5 sets as favorite | 45% | 5/11 | — | |
| Covers +1.5 sets as underdog | 38% | 5/13 | 0% | 0/5 |
| Tiebreak sets won | 40% | 4/10 | 100% | 1/1 |
| Wins after taking set 1 | 93% | 13/14 | 100% | 2/2 |
| Wins 2-0 after taking set 1 | 71% | 10/14 | 100% | 2/2 |
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. Small sample — read with care. Head-to-head: 1 of 1 completed meetings ended in straight sets (Yamasaki 1, Koaykul 0).
Style Matchup
Playing styles and historical archetype record
Yamasaki
💥 Big Hitter
Koaykul
🏃 Pusher
Previous meetings
1 career meeting, newest first
May 3, 2026
M25 Nakhon Pathom
H Hard · 1st Round Qualifying
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Yamasaki | Koaykul |
|---|---|---|
| W-L | 0–2 | 0–2 |
| Avg odds | 5.40 | 8.71 |
| ROI % | -100.0% | -100.0% |
| Units P/L | -2.00u | -2.00u |
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 Koaykul's 0%).
| Opponent | Yamasaki | Koaykul |
|---|---|---|
| Leo Vithoontien | L 46 46 | L 16 16 |
| Veerawit Kamput | W 60 60 | L |
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
M15 Tokyo · 1st Round Qualifying
Jun 7
Peter Bertran
M15 Nonthaburi · 2nd Round
Sep 10
Vadym Konovchuk
M15 Nonthaburi · 1st Round
Sep 9
Markus Malaszszak
M15 Nonthaburi · 1st Round
Sep 2
Kamonpanyakorn Thadpong
M15 Nakhon Pathom · 3rd Round Qualifying
May 11
Jumpei Yamasaki
M25 Nakhon Pathom · 1st Round Qualifying
May 3
Leo Vithoontien
M15 Hua Hin 2 · 2nd Round
Oct 30
Teerapat Khantiweerawat
M15 Hua Hin · Round of 32
Oct 29
Teerapat Khantiweerawat
M15 Hua Hin 2 · 1st Round
Oct 29
Win rate
Matches, sets and games won · Last 12 months · 7–30 matches
| Metric | Yamasaki | Koaykul |
|---|---|---|
| Matches won | 53% | 29% |
| Sets won | 51% | 29% |
| Games won | 52% | 33% |
Record by tier
Head-to-head record by tournament tier
| Stage | Yamasaki | Koaykul |
|---|---|---|
| ITF M25 | 1 | 0 |
By surface
Head-to-head record per surface
| Surface | Yamasaki | Koaykul |
|---|---|---|
| Hard | 1 | 0 |
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