Hiromasa Koyama vs Youssef Kadiri HassaniPrediction, Head-to-Head Results, and Stats
Hiromasa Koyama and Youssef Kadiri Hassani have met 1 time since 2026; Youssef Kadiri Hassani leads 1–0. Across all meetings Koyama has taken 1 sets to Hassani's 2. Their most recent meeting: Youssef Kadiri Hassani won at M15 Harmon (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Koyama | Kadiri Hassani | ||
|---|---|---|---|---|
| Indicator | Hiromasa Koyama | Youssef Kadiri Hassani | ||
| Wins in straight sets | 67% | 8/12 | 25% | 1/4 |
| Wins a set when losing | 28% | 5/18 | 38% | 3/8 |
| Goes to a deciding set | 30% | 9/30 | 50% | 6/12 |
| Covers −1.5 sets as favorite | 50% | 2/4 | 0% | 0/3 |
| Covers +1.5 sets as underdog | 50% | 11/22 | 50% | 4/8 |
| Tiebreak sets won | 50% | 6/12 | 25% | 1/4 |
| Wins after taking set 1 | 73% | 11/15 | 75% | 3/4 |
| Wins 2-0 after taking set 1 | 53% | 8/15 | 25% | 1/4 |
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: 0 of 1 completed meetings ended in straight sets (Koyama 0, Kadiri Hassani 0).
Style Matchup
Playing styles and historical archetype record
Koyama
🪃 Counterpuncher
Hassani
⚙️ 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
Jun 6, 2026
M15 Harmon
H Hard · Semifinals
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Koyama | Hassani | ||
|---|---|---|---|---|
| Outcome | Hiromasa Koyama | Youssef Kadiri Hassani | ||
| 1 or more | 70% | 7/10 | 100% | 9/9 |
| 3 or more | 10% | 1/10 | 67% | 6/9 |
| 5 or more | 0% | 0/10 | 44% | 4/9 |
| 10 or more | 0% | 0/10 | 0% | 0/9 |
| 15 or more | 0% | 0/10 | 0% | 0/9 |
| 20 or more | 0% | 0/10 | 0% | 0/9 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Koyama | Hassani |
|---|---|---|
| W-L | 5–6 | 5–4 |
| Avg odds | 3.54 | 2.53 |
| ROI % | +13.9% | +4.9% |
| Units P/L | +1.53u | +0.44u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Koyama | Hassani |
|---|---|---|
| Countries | 1 | — |
| Events | 2 | — |
| Matches | 4 | — |
| Distance | — | — |
| Route | 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
Hassani has a higher win rate against shared opponents (50% vs Koyama's 0%).
| Opponent | Koyama | Hassani |
|---|---|---|
| Jake Delaney | L 36 16 | L 36 64 36 |
| Yusuke Kusuhara | L 62 57 36 | W 64 61 |
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
Oliver Bonding
M25 Louisville · 1st Round
Jul 14
Spencer Johnson
M15 Rancho Santa Fe · 2nd Round
Jul 10
Tyler Lee
M15 Rancho Santa Fe · 1st Round
Jul 8
Rafael De Alba
M15 San Diego · 1st Round
Jul 1
Jake Delaney
M15 Harmon · Final
Jun 7
Hiromasa Koyama
M15 Harmon · Semifinals
Jun 6
Yusuke Kusuhara
M15 Harmon · Quarterfinals
Jun 5
Yuta Kawahashi
M15 Harmon · 2nd Round
Jun 4
Win rate
Matches, sets and games won · Last 12 months · 12–30 matches
| Metric | Koyama | Hassani |
|---|---|---|
| Matches won | 40% | 33% |
| Sets won | 42% | 37% |
| Games won | 46% | 46% |
Record by tier
Head-to-head record by tournament tier
| Stage | Koyama | Hassani |
|---|---|---|
| ITF M15 | 0 | 1 |
By surface
Head-to-head record per surface
| Surface | Koyama | Hassani |
|---|---|---|
| Hard | 0 | 1 |
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