Hiromasa Koyama vs Yuki MochizukiPrediction, Head-to-Head Results, and Stats
Hiromasa Koyama and Yuki Mochizuki have met 1 time since 2026; Hiromasa Koyama leads 1–0. Across all meetings Koyama has taken 2 sets to Mochizuki's 0. Their most recent meeting: Hiromasa Koyama won at M25 Taipei (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Koyama | Mochizuki | ||
|---|---|---|---|---|
| Indicator | Hiromasa Koyama | Yuki Mochizuki | ||
| Wins in straight sets | 67% | 8/12 | 58% | 11/19 |
| Wins a set when losing | 28% | 5/18 | 19% | 6/32 |
| Goes to a deciding set | 30% | 9/30 | 27% | 14/51 |
| Covers −1.5 sets as favorite | 50% | 2/4 | 32% | 8/25 |
| Covers +1.5 sets as underdog | 50% | 11/22 | 38% | 9/24 |
| Tiebreak sets won | 50% | 6/12 | 50% | 6/12 |
| Wins after taking set 1 | 73% | 11/15 | 93% | 14/15 |
| Wins 2-0 after taking set 1 | 53% | 8/15 | 73% | 11/15 |
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 (Koyama 1, Mochizuki 0).
Style Matchup
Playing styles and historical archetype record
Koyama
🪃 Counterpuncher
Mochizuki
⚙️ Grinder
Matchup analysis
🪃 Counterpuncher vs ⚙️ Grinder is historically tight (50% vs 50%, 1,208 matches). Neither style has a clear edge, so form, surface, and the head-to-head matter most.
Previous meetings
1 career meeting, newest first
Aug 18, 2026
M25 Taipei
H Hard · 1st Round
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Koyama | Mochizuki | ||
|---|---|---|---|---|
| Outcome | Hiromasa Koyama | Yuki Mochizuki | ||
| 1 or more | 70% | 7/10 | 88% | 14/16 |
| 3 or more | 10% | 1/10 | 69% | 11/16 |
| 5 or more | 0% | 0/10 | 38% | 6/16 |
| 10 or more | 0% | 0/10 | 0% | 0/16 |
| 15 or more | 0% | 0/10 | 0% | 0/16 |
| 20 or more | 0% | 0/10 | 0% | 0/16 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Koyama | Mochizuki |
|---|---|---|
| W-L | 5–6 | 8–10 |
| Avg odds | 3.54 | 2.13 |
| ROI % | +13.9% | -27.8% |
| Units P/L | +1.53u | -5.00u |
Travel
Last 30 days
| Metric | Koyama | Mochizuki |
|---|---|---|
| Countries | 1 | 2 |
| Events | 2 | 4 |
| Matches | 4 | 7 |
| Distance | — | — |
| Route | TPE | CHN → TPE |
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
Koyama has a higher win rate against shared opponents (67% vs Mochizuki's 33%).
| Opponent | Koyama | Mochizuki |
|---|---|---|
| Shinji Hazawa | W 67 61 62 | L 16 46 |
| Matthew Dellavedova | L 16 26 | L 36 63 06 |
| Ryota Tanuma | W 61 46 76 | W 62 63 |
Recent Form
Last five matches per player
Luca Castelnuovo
M25 Taipei · 2nd Round
Aug 27
Shinji Hazawa
M25 Taipei · 1st Round
Aug 26
Matthew Dellavedova
M25 Taipei · 2nd Round
Aug 21
Yuki Mochizuki
M25 Taipei · 1st Round
Aug 18
Matthew Dellavedova
M15 Tokyo · 1st Round
Jul 8
Yusuke Takahashi
M15 Tokyo · 1st Round
Jun 30
Max Purcell
M15 Tokyo · 1st Round
Jun 17
Hayden Jones
M15 Tokyo · 1st Round
Jun 10
Kasidit Samrej
M25 Taipei · 1st Round
Aug 26
Hiromasa Koyama
M25 Taipei · 1st Round
Aug 18
Fanming Meng
M15 Tianjin · 1st Round
Aug 12
Matthew Dellavedova
M15 Tianjin · Final
Aug 9
Donghyun Hwang
M15 Tianjin · Semifinals
Aug 8
Tsung-Hao Huang
M15 Tianjin · Quarterfinals
Aug 7
Ruochen Gao
M15 Tianjin · 2nd Round
Aug 6
Ruochen Gao
M15 Tianjin · 2nd Round
Aug 6
Win rate
Matches, sets and games won · Last 12 months · 30–51 matches
| Metric | Koyama | Mochizuki |
|---|---|---|
| Matches won | 40% | 37% |
| Sets won | 42% | 38% |
| Games won | 46% | 46% |
Record by tier
Head-to-head record by tournament tier
| Stage | Koyama | Mochizuki |
|---|---|---|
| ITF M25 | 1 | 0 |
By surface
Head-to-head record per surface
| Surface | Koyama | Mochizuki |
|---|---|---|
| Hard | 1 | 0 |
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