Issei Okamura vs Daisuke Sumizawa Head-to-Head Stats, Results & Performance Comparison
Wojtek Kolan
HEAD TO HEAD
I. Okamura vs D. Sumizawa
Issei Okamura
JPN
w
l
l
l
l
l
w
l
l
l
1
Win
1
Played
0
Win
33
Age
26
5'7" (170 cm)
Height
5'9" (175 cm)
870
C. Rank
857
574
Best Rank
687
0
Total Titles
0
0
YTD Titles
0
$0
Career Money
$0
Right-Handed
Plays
Right-Handed
Daisuke Sumizawa
JPN
w
l
w
l
w
l
w
l
l
l
1
Win
1
Played
0
Win
33
Age
26
5'7" (170 cm)
Height
5'9" (175 cm)
870
C. Rank
857
574
Best Rank
687
0
Total Titles
0
0
YTD Titles
0
$0
Career Money
$0
Right-Handed
Plays
Right-Handed
Head-to-head: Okamura 1 - 0 Sumizawa
They have played 2 sets in total, with Issei Okamura winning 2 and Daisuke Sumizawa winning 0. The last match between Issei Okamura and Daisuke Sumizawa was at the Japan F3 (Kofu), 20-03-2017, Round: R1, Surface: Hard, with Issei Okamura getting the victory 6-2 6-2.
| Players | Head To Head Match Wins |
|---|---|
| Okamura | 1 |
| Sumizawa | 0 |
Last 1 H2H Matches:
(R1) Japan F3 (Kofu)(03-20-17)
Issei Okamura
6
6
Daisuke Sumizawa
2
2
I. Okamura vs D. Sumizawa H2H Profile
| Stats | ||
|---|---|---|
| $0 | Career Prize Money | $0 |
| 47.67% (246-270) | Career Total W/L | 52.68% (216-194) |
| 1 | Hard | 0 |
| 0 | Titles | 1 |
| 1 | Total H2H Matches | 0 |
| 0% (0-0) | YTD Win/Loss | 0% (0-0) |
I. Okamura vs D. Sumizawa Match Preview:
- Second serve performance recent form: In recent form (last 6 months), Issei Okamura has won 40.72% of points on their second serve, while Daisuke Sumizawa has won 44.17%. There is a high correlation between this stat and match prediction accuracy.
- Return game stats recent form: Return stats show Issei Okamura, in recent form, has won 41.01% of their opponent's second serve points, while Daisuke Sumizawa has won 42.37%. The same stats for first serve returns are 24.92% and 26.28% respectively and this has a high correlation to pick who is favored in this H2H matchup.
- Under pressure analysis: Issei Okamura has saved 45.61% of breakpoints in recent form, whereas Daisuke Sumizawa has saved 44.02% which is a useful statistic for in-game betting predictions.
- Performance overview: Over the last year Issei Okamura has won 47.73% of matches played (W/L 21/23), with Daisuke Sumizawa winning 59.32% (W/L 35/24) that gives us an overall head-to head prediction overview.
- Best surface: Issei Okamura has their best career surface win % on Grass, winning 67% (W/L 4/2), and worse career win % on I.hard, winning 13% (W/L 2/13). Daisuke Sumizawa has their best career surface win % on I.hard, winning 67% (W/L 10/7), and worse career win % on Grass, winning 0% (W/L 0/2).
- Player level: In the last year, Issei Okamura has played most of their matches on the Futures/Satellites/ITF tournaments $10K, winning 47.73% of matches (W/L 21/23), where as Daisuke Sumizawa has played most of their matches on the Futures/Satellites/ITF tournaments $10K, winning 61.40% of matches (W/L 35/22). When comparing stats between players to predict the favorite, it is of course all relative to the event level they have been playing at.
- Direct H2H matches: They have played 1 times before with Issei Okamura winning 1 times and Daisuke Sumizawa being victorious 0 times. They have played 2 sets in total, with Issei Okamura winning 2 and Daisuke Sumizawa winning 0.
- The last match between Issei Okamura and Daisuke Sumizawa was at the Japan F3 (Kofu), 20-03-2017, Round: R1, Surface: Hard, with Issei Okamura getting the victory 6-2 6-2.
- Head to head match duration: In past head to head matches, the average match time between these players has been 1:16:0.
- Opponent quality stats: Over the last 12 months, Issei Okamura has played against opponents with an average rank of 293.84 while Daisuke Sumizawa has played against players with an average rank of 374.08.
- Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Issei Okamura has won 44% of deciding sets over the last 12 months, while Daisuke Sumizawa has won 47% in all matches played on tour.
- Break point conversion: In recent form, Issei Okamura has converted 23.91% of breakpoint opportunities, and Daisuke Sumizawa has converted 34.23% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.
Issei Okamura vs Daisuke Sumizawa Editorial Preview By TennisTipster88.
I. Okamura vs D. Sumizawa H2H Stats Used In Our Predictions
| Stats | ||
|---|---|---|
| 1 | H2H Matches Won | 0 |
| 2 | Sets Won | 0 |
| 12 | Games Won | 4 |
| 1 | Total Double Faults | 2 |
| 1:16:0 | Average Match Time | 1:16:0 |
| 66% (31/47) | 1st Serve % | 66% (33/50) |
| 81% (25/31) | 1st Serve Win % | 67% (22/33) |
| 56% (9/16) | 2nd Serve Win % | 18% (3/17) |
| 100% (4/4) | Break Pts Won % | 0% (0/2) |
| 50% (25/50) | Return Points Win % | 28% (13/47) |
| 100% (1/1) | Best‑of‑3 Win % | 0% (0/1) |
| 100% (1/1) | 1st Set Won, Won Match | 0% (0/0) |
| 0% (0/1) | 1st Set Won, Lost Match | 0% (0/0) |
| 0% (0/0) | 1st Set Lost, Won Match | 0% (0/1) |
Recent Performance Stats
2nd Serve Win %: Okamura 45%, Sumizawa 49%.
Opp 2nd Serve Pts Won: Okamura 47%, Sumizawa 48%.
Break Points Saved %: Okamura 51%, Sumizawa 53%.
I. Okamura Recent Matches Played
| OPPONENT | RESULT | SCORE | H2H | |
|---|---|---|---|---|
| M25 Takasaki - 15-09-2025 | ||||
Q1  Jonathan MridhaJ. Mridha | L | 6-3 7-6(5) | ||
| M25 Sapporo - 08-09-2025 | ||||
Q1 Natsuki YamamotoN. Yamamoto | L | 6-2 4-6 10-5 | ||
| M25 Sapporo - 01-09-2025 | ||||
R1 Naoya HondaN. Honda | L | 6-3 6-2 | ||
Q3 Seiya NakanishiS. Nakanishi | W | 4-6 7-6(5) 10-8 | ||
 M15 Singapore - 11-08-2025 | ||||
R1  Antoine BergerA. Berger | L | 6-1 6-1 | ||
D. Sumizawa Recent Matches Played
| OPPONENT | RESULT | SCORE | H2H | |
|---|---|---|---|---|
| Brisbane 3 Challenger - 10-11-2025 | ||||
Q1 Takuya KumasakaT. Kumasaka | L | 6-4 4-6 6-1 | ||
| Taipei Challenger - 03-11-2025 | ||||
Q1 Takeru YuzukiT. Yuzuki | L | 6-4 6-3 | ||
| M15 Tanagura - 20-10-2025 | ||||
R2 Yuta TomidaY. Tomida | L | 6-1 6-3 | ||
R1  Sung Woo ChoS. Woo | W | 6-2 6-2 | ||
| M25 Takasaki - 15-09-2025 | ||||
R2 Takuya KumasakaT. Kumasaka | L | 3-6 7-5 7-6(1) | ||
I. Okamura vs D. Sumizawa Stats Breakdown Vs All H2H Opponents
| Stats | ||
|---|---|---|
| 47.67% (246/270) | YTD Win/Loss | 52.68% (216/194) |
| 48.10% (558/602) | Sets Win/Loss | 52.37% (486/442) |
| 49.25% (5292/5454) | Games Win/Loss | 51.35% (4368/4138) |
| 49.88% (203/204) | Hard Win/Loss | 54.83% (159/131) |
| 44.00% (33/42) | Clay Win/Loss | 45.74% (43/51) |
| 21.43% (6/22) | Indoor Hard W/L | 58.33% (14/10) |
| 66.67% (4/2) | Grass Win/Loss | 0.00% (0/2) |
| 0.13 | Aces Per Game | 0.16 |
| 676 | Aces Total | 668 |
| 0.19 | Double Faults Per Game | 0.16 |
| 997 | Total Double Faults | 678 |
| 1:7:51 | Average Match Time | 1:1:48 |
| 477.88 | Average Opponent Rank | 401.83 |
| 61% (13952/22795) | 1st Serve % | 58% (9118/15843) |
| 64% (8954/13952) | 1st Serve Win % | 67% (6136/9118) |
| 47% (4192/8843) | 2nd Serve Win % | 48% (3194/6724) |
| 42% (915/2180) | Break Points Won % (Total) | 44% (657/1485) |
| 39% (8872/22653) | Return Points Win % | 39% (6151/15593) |
| 29.73% (11/26) | Challenger W/L | 23.08% (3/10) |
| 49.06% (235/244) | Futures W/L | 53.65% (213/184) |
| 47% (240/509) | Best of 3 Sets Win % | 52% (211/403) |
| 100% (2/2) | Best of 5 Sets Win % | 100% (2/2) |
| 48% (51/106) | Tiebreaks Win % (Total) | 45% (40/88) |
| 46% (61/132) | Deciding Set Win % | 49% (54/111) |
| 85% (261/221) | 1st Set Won, Won Match | 85% (215/183) |
| 15% (261/40) | 1st Set Won, Lost Match | 14% (215/31) |
| 9% (254/24) | 1st Set Lost, Won Match | 17% (195/33) |
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