Hiromasa Koyama vs Zhao ZhaoPrediction, Head-to-Head Results, and Stats
Hiromasa Koyama and Zhao Zhao have met 1 time since 2026; Hiromasa Koyama leads 1–0. 1 of their meetings has been a final, with Koyama leading those 1–0. Across all meetings Koyama has taken 2 sets to Zhao's 0. Their most recent meeting: Hiromasa Koyama won at M15 Wuning (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Koyama | Zhao | ||
|---|---|---|---|---|
| Indicator | Hiromasa Koyama | Zhao Zhao | ||
| Wins in straight sets | 73% | 24/33 | 71% | 17/24 |
| Wins a set when losing | 20% | 4/20 | 47% | 8/17 |
| Goes to a deciding set | 25% | 13/53 | 37% | 15/41 |
| Covers −1.5 sets as favorite | 63% | 10/16 | 50% | 3/6 |
| Covers +1.5 sets as underdog | 48% | 12/25 | 63% | 10/16 |
| Tiebreak sets won | 56% | 9/16 | 50% | 3/6 |
| Wins after taking set 1 | 90% | 28/31 | 82% | 23/28 |
| Wins 2-0 after taking set 1 | 77% | 24/31 | 61% | 17/28 |
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, Zhao 0).
Style Matchup
Playing styles and historical archetype record
Koyama
🧱 The Wall
Zhao
💥 Big Hitter
Matchup analysis
The 💥 Big Hitter archetype wins about 57% vs 🧱 The Wall across 374 matches in our dataset: a stylistic lean toward Zhao Zhao.
Big Hitter players often use power groundstrokes and high winner count to pressure the the wall's elite returner.
Previous meetings
1 career meeting, newest first
Sep 13, 2026
M15 Wuning
H Hard · Final
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Koyama | Zhao | ||
|---|---|---|---|---|
| Outcome | Hiromasa Koyama | Zhao Zhao | ||
| 1 or more | 42% | 5/12 | 91% | 10/11 |
| 3 or more | 17% | 2/12 | 46% | 5/11 |
| 5 or more | 0% | 0/12 | 27% | 3/11 |
| 10 or more | 0% | 0/12 | 0% | 0/11 |
| 15 or more | 0% | 0/12 | 0% | 0/11 |
| 20 or more | 0% | 0/12 | 0% | 0/11 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Koyama | Zhao |
|---|---|---|
| W-L | 10–3 | 6–4 |
| Avg odds | 2.14 | 3.69 |
| ROI % | +30.8% | +38.6% |
| Units P/L | +4.00u | +3.86u |
Common opponents
Results vs. opponents both players faced · Last 12 months
Koyama has a higher win rate against shared opponents (50% vs Zhao's 25%).
| Opponent | Koyama | Zhao |
|---|---|---|
| Matthew Dellavedova | L 16 26 | L 26 16 |
| Max Purcell | L 26 16 | L 26 46 |
| Jaesung Choe | W 64 75 | L 64 46 06 |
| Zichen Shao | W 64 64 | W 46 61 1412 |
Recent Form
Last five matches per player
Zhao Zhao
M15 Wuning · Final
Sep 13
Jaesung Choe
M15 Wuning · Semifinals
Sep 12
Wishaya Trongcharoenchaikul
M15 Wuning · Quarterfinals
Sep 11
Zichen Shao
M15 Wuning · 2nd Round
Sep 10
Zichen Shao
M15 Wuning · 2nd Round
Sep 10
Yue Xia
M15 Wuning · 1st Round
Sep 9
Qian Sun
M15 Wuning · 2nd Round
Sep 3
Lachlan Vickery
M15 Wuning · 1st Round
Sep 2
Xinyuan Xie
M25 Qian Daohu · 1st Round Qualifying
Oct 11
Matthew Dellavedova
M25 Luan · 1st Round
Oct 6
Max Purcell
M15 Luan · 2nd Round
Oct 1
Markus Malaszszak
M15 Luan · 1st Round
Sep 29
Sheng Tang
M25 Guiyang · 1st Round
Sep 16
Hiromasa Koyama
M15 Wuning · Final
Sep 13
Geun Jun Kim
M15 Wuning · Semifinals
Sep 12
Boxiong Zhang
M15 Wuning · Quarterfinals
Sep 11
Win rate
Matches, sets and games won · Last 12 months · 41–53 matches
| Metric | Koyama | Zhao |
|---|---|---|
| Matches won | 62% | 59% |
| Sets won | 59% | 58% |
| Games won | 53% | 53% |
Record by tier
Head-to-head record by tournament tier
| Stage | Koyama | Zhao |
|---|---|---|
| Finals | 1 | 0 |
| ITF M15 | 1 | 0 |
By surface
Head-to-head record per surface
| Surface | Koyama | Zhao |
|---|---|---|
| Hard | 1 | 0 |
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