Colin Sinclair vs Jumpei YamasakiPrediction, Head-to-Head Results, and Stats
Colin Sinclair and Jumpei Yamasaki have met 1 time since 2026; Jumpei Yamasaki leads 1–0. Across all meetings Sinclair has taken 0 sets to Yamasaki's 2. Their most recent meeting: Jumpei Yamasaki won at M15 Tokyo (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Sinclair | Yamasaki | ||
|---|---|---|---|---|
| Indicator | Colin Sinclair | Jumpei Yamasaki | ||
| Wins in straight sets | 70% | 30/43 | 70% | 7/10 |
| Wins a set when losing | 38% | 11/29 | 29% | 4/14 |
| Goes to a deciding set | 33% | 24/72 | 29% | 7/24 |
| Covers −1.5 sets as favorite | 55% | 22/40 | 30% | 3/10 |
| Covers +1.5 sets as underdog | 63% | 17/27 | 50% | 6/12 |
| Tiebreak sets won | 51% | 22/43 | 50% | 5/10 |
| Wins after taking set 1 | 88% | 35/40 | 82% | 9/11 |
| Wins 2-0 after taking set 1 | 75% | 30/40 | 64% | 7/11 |
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 1 completed meetings ended in straight sets (Sinclair 0, Yamasaki 1).
Style Matchup
Playing styles and historical archetype record
Sinclair
🤖 Servebot
Yamasaki
🪃 Counterpuncher
Matchup analysis
The 🤖 Servebot archetype wins about 57% vs 🪃 Counterpuncher across 2,280 matches in our dataset: a stylistic lean toward Colin Sinclair.
Servebot players often use high ace rate and dominant service to pressure the counterpuncher's elite bp conversion.
Previous meetings
1 career meeting, newest first
Jun 10, 2026
M15 Tokyo
H Hard · 1st Round
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Sinclair | Yamasaki | ||
|---|---|---|---|---|
| Outcome | Colin Sinclair | Jumpei Yamasaki | ||
| 1 or more | 100% | 13/13 | 100% | 3/3 |
| 3 or more | 100% | 13/13 | 67% | 2/3 |
| 5 or more | 92% | 12/13 | 33% | 1/3 |
| 10 or more | 31% | 4/13 | 0% | 0/3 |
| 15 or more | 0% | 0/13 | 0% | 0/3 |
| 20 or more | 0% | 0/13 | 0% | 0/3 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Sinclair | Yamasaki |
|---|---|---|
| W-L | 6–7 | 3–1 |
| Avg odds | 1.84 | 2.05 |
| ROI % | -18.9% | +44.0% |
| Units P/L | -2.45u | +1.76u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Sinclair | Yamasaki |
|---|---|---|
| Countries | 1 | — |
| Events | 1 | — |
| Matches | 1 | — |
| Distance | 0 mi · 0 km | — |
| Route | KAZ | — |
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
Yamasaki has a higher win rate against shared opponents (50% vs Sinclair's 33%).
| Opponent | Sinclair | Yamasaki |
|---|---|---|
| Takuya Kumasaka | L 26 67 | L 26 26 |
| Koki Matsuda | L 36 36 | L 26 67 |
| Naoki Nakagawa | L 67 64 46 | W 63 61 |
| Hayden Jones | L 67 67 | W 61 76 |
| Shunsuke Nakagawa | W 63 76 | L 36 67 |
| Zhenxiong Dong | W 64 61 | W 61 63 |
Recent Form
Last five matches per player
Takuya Kumasaka
Astana Challenger · 1st Round
Aug 11
Koki Matsuda
Samsun Challenger · 2nd Round
Jul 29
Mert Alkaya
Samsun Challenger · 1st Round
Jul 28
Matt Hulme
M25 Brisbane · Quarterfinals
Jul 17
Shinji Hazawa
M25 Brisbane · 2nd Round
Jul 16
Wihan Van Der Merwe
M25 Brisbane · 1st Round
Jul 15
Naoki Nakagawa
M15 Tokyo · 2nd Round
Jun 18
Saki Tange
M15 Tokyo · 1st Round
Jun 16
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
Win rate
Matches, sets and games won · Last 12 months · 25–72 matches
| Metric | Sinclair | Yamasaki |
|---|---|---|
| Matches won | 60% | 44% |
| Sets won | 58% | 45% |
| Games won | 52% | 49% |
Record by tier
Head-to-head record by tournament tier
| Stage | Sinclair | Yamasaki |
|---|---|---|
| ITF M15 | 0 | 1 |
By surface
Head-to-head record per surface
| Surface | Sinclair | Yamasaki |
|---|---|---|
| Hard | 0 | 1 |
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