Kokoro Isomura and Shinji Hazawa will square off in the 1st round of the Brisbane 1 Challenger for the 3rd time in their career. They are scheduled to play on Tuesday at 10:00 am on COURT 6. Here the head to head stats and relative prediction.
Prediction, odds and live streaming
The pick for Tennis Tonic is Kokoro Isomura who should win in 3 sets.
As per the initial odds, Kokoro Isomura is the pick to win this match.
Kokoro Isomura -> 1.55
Shinji Hazawa -> 2.33
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Prediction and head to head Kokoro Isomura vs. Shinji Hazawa
This will be the 3rd time that Kokoro Isomura and Shinji Hazawa square off. The head to head is 1-1 for Isomura and Hazawa (see full H2H stats),but they are 1-1 on hard.
The last time that they played, Hazawa won 7-5 6-4 in the 1st round in M25 Kashiwa back in 2022.
Kokoro Isomura
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 9-9 | 9-9 | 0-0 | 0-0 | 0-0 | 0-0 |
| 2024 | 39-25 | 27-18 | 6-4 | 6-3 | 0-0 | 0-0 |
| 2023 | 25-30 | 25-29 | 0-1 | 0-0 | 0-0 | 0-0 |
| 2022 | 24-16 | 7-9 | 17-7 | 0-0 | 0-0 | 0-0 |
| 2021 | 6-8 | 4-2 | 2-6 | 0-0 | 0-0 | 0-0 |
Ranked no. 448 (career-high), Kokoro got to the 1st round after beating Corban Crowther 4-6 6-3 6-4 and Colin Sinclair 6-4 6-4.
In the qualifications, Kokoro had a good straight sets win against Sinclair (6-4 6-4). During the match, Isomura scored 68 points vs Sinclair’s 58. The Japanese was pretty aggressive to blast 31 winners.
Regarding the service games, Isomura wasn’t able to score even 1 ace in the encounter and he committed only 1 double fault. Kokoro Isomura was very efficient on serve to win 82% (31/38) of his 1st serve and 63% (10/16) on the second serve. This was the main reason for not conceding a single break during the match. Kokoro broke Sinclair twice after converting 22% of his break points (2/9).
Overall Performance in this tournament
Isomura started his run at this tournament from the qualifications. In the main draw, he has lost 1 set in this tournament to win 54% of the points he played.
Isomura has a winning record in the last 5 years having won 55% of his matches (99-81). 5-2 on hard in 2025. Regarding his performance on the same surface of this event, Isomura has an aggregate68-60 record in the last 5 years on hard.
Kokoro has a compiled 5-2 win-loss record in 2025, 5-2 on hard (See FULL STATS).
Previously in the Brisbane 1 Challenger
The Japanese has never competed in this tournament before.
Shinji Hazawa
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 8-8 | 8-8 | 0-0 | 0-0 | 0-0 | 0-0 |
| 2024 | 14-14 | 14-12 | 0-1 | 0-1 | 0-0 | 0-0 |
| 2023 | 16-15 | 14-13 | 0-0 | 2-2 | 0-0 | 0-0 |
| 2022 | 51-27 | 49-26 | 0-0 | 2-1 | 0-0 | 0-0 |
| 2021 | 0-0 | 0-0 | 0-0 | 0-0 | 0-0 | 0-0 |
Ranked no. 855, the Japanese got to the 1st round after beating Arthur Weber 6-4 7-6(3) and Leo Vithoontien 6-4 7-6(5).
In the qualifications, Shinji had a good straight sets win against Vithoontien (6-4 7-65). During the match Hazawa scored 82 points vs Vithoontien’s 76. The Japanese was extremely aggressive to blast 40 winners.
Talking about serving, Hazawa bagged 5 aces and he committed only 1 double fault for the entire match. Shinji Hazawa was extremely efficient on serve to win 78% (40/51) of his 1st serve and 52% (14/27) on the second serve. This was the main reason for not conceding a single break during the match. The Japanese broke Vithoontien once after converting 17% of his break points (1/6).
Overall Performance in this tournament
Hazawa started his run at this tournament from the qualifications. In the main draw, he hasn’t conceded yet a set in this event to conquer 53% of the points he played.
The Japanese has a composed 3-1 win-loss record in 2025, 3-1 on hard (See FULL STATS).
H2H Performance in the tournament
Matches, sets, games and points
| Points | Isomura | Hazawa |
|---|---|---|
| Match played | 2 | 2 |
| Tot Set | 5 | 4 |
| Tot Games | 49 | 46 |
| Pts | 168-145 | 159-143 |
| Total Points | 313 | 302 |
| Winners | 72 | 78 |
| %Winners | 43% | 49% |
Both Isomura and Hazawa played 2 matches. Also both players started their run from the qualifications.At the moment, Kokoro Isomura conceded 1 set while Shinji Hazawa hasn’t lost a set so far. Isomura has played 1 set more than Hazawa (5 vs 4). Therefore, Isomura played 3 games more than Hazawa. Isomura scored 72 winners (43% of the total points). On the other side, Shinji managed to score 78 winners (49%).
Serve Performance
| Serve | Isomura | Hazawa |
|---|---|---|
| Aces | 1 | 10 |
| Avg per match | 0.5 | 5 |
| 1st in | 98/138 | 96/144 |
| %1st in | 71% | 67% |
| 1st pts | 72/98 | 78/96 |
| %1st pts | 73% | 81% |
| 2nd pts | 22/40 | 25/48 |
| %2nd pts | 55% | 52% |
Isomura recorded 1 ace (0.5 per match). Hazawa also managed to score 10 aces (5 per match). Isomura won 73% points behind his first serve. He pretty solid on his second serve to win 55% of the points. On the other side, Hazawa won 81% of the points behind his first serve. He had a solid display on his second serve to win 52% of the points.
How they played the important points
| Breaks | Isomura | Hazawa |
|---|---|---|
| Won | 7 | 2 |
| Converted | 7/20 | 2/12 |
| % Converted | 35% | 17% |
| Conceded | 8 | 6 |
| Saved | 4 | 6 |
| % Saved | 50% | 100% |
| Times Broken | 4 | 0 |
The Japanese broke his opponents 7 times with a 35% conversion rate. The Japanese dropped his serve 4 times and he saved 50% of the break points that he conceded. Shinji broke his opponents twice with a 17% conversion rate. Shinji was rock solid on his serve as he has never conceded a single service game after saving 6 break points.
| Isomura | ||||
| Q1 Crowther |
Q3 Sinclair |
Total | ||
|---|---|---|---|---|
| Score | 4-6 6-3 6-4 | 6-4 6-4 | ||
| Tot Set | 3 | 2 | 5 | |
| Tot Games | 29 | 20 | 49 | |
| pts | 100-87 | 68-58 | 168-145 | |
| Total points | 187 | 126 | 313 | |
| Winners | 41 | 31 | 72 | |
| %Winners | 41% | 46% | 43% | |
| SERVE | ||||
| Aces | 1 | 0 | 1 | |
| Double Faults | 4 | 1 | 5 | |
| 1st in | 60/84 | 38/54 | 98/138 | |
| % 1st in | 71% | 70% | 71% | |
| 1st pts | 41/60 | 31/38 | 72/98 | |
| % 1st pts | 68% | 82% | 73% | |
| 2nd pts | 12/24 | 10/16 | 22/40 | |
| % 2nd pts | 50% | 63% | 55% | |
| Breaks | ||||
| Won | 5 | 2 | 7 | |
| Converted | 5/11 | 2/9 | 7/20 | |
| Converted % | 45% | 22% | 35% | |
| Conceded | 8 | 0 | 8 | |
| Saved | 4/8 | 0/0 | 4 | |
| Saved % | 50% | – | 25% | |
| Times Broken | 4 | 0 | 4 | |
| Hazawa | ||||
| Q1 Weber |
Q3 Vithoontien |
Total | ||
|---|---|---|---|---|
| Score | 6-4 7-63 | 6-4 7-65 | ||
| Tot Set | 2 | 2 | 4 | |
| Tot Games | 23 | 23 | 46 | |
| pts | 77-67 | 82-76 | 159-143 | |
| Total points | 144 | 158 | 302 | |
| Winners | 38 | 40 | 78 | |
| %Winners | 49% | 49% | 49% | |
| SERVE | ||||
| Aces | 5 | 5 | 10 | |
| Double Faults | 1 | 1 | 2 | |
| 1st in | 45/66 | 51/78 | 96/144 | |
| % 1st in | 68% | 65% | 67% | |
| 1st pts | 38/45 | 40/51 | 78/96 | |
| % 1st pts | 84% | 78% | 81% | |
| 2nd pts | 11/21 | 14/27 | 25/48 | |
| % 2nd pts | 52% | 52% | 52% | |
| Breaks | ||||
| Won | 1 | 1 | 2 | |
| Converted | 1/6 | 1/6 | 2/12 | |
| Converted % | 17% | 17% | 17% | |
| Conceded | 0 | 6 | 6 | |
| Saved | 0/0 | 6/6 | 6 | |
| Saved % | – | 100% | 50% | |
| Times Broken | 0 | 0 | 0 | |
Head 2 Head
LWLWLLLWLW
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- Li TuTu – Blake EllisEllis (1-0) – H2H and prediction
- Christian LangmoLangmo – Illya MarchenkoMarchenko (0-1) – H2H and prediction
- Jacob BrummBrumm – (0-0) – H2H and prediction
- Marek GengelGengel – Naoki NakagawaNakagawa (1-0) – H2H and prediction
- Masamichi ImamuraImamura – Yuta ShimizuShimizu (0-2) – H2H and prediction
- Govind NandaNanda – Maxime JanvierJanvier (0-0) – H2H and prediction
- Dane SweenySweeny – Matthew DellavedovaDellavedova (0-0) – H2H and prediction
- Matthew HulmeHulme – Alex BoltBolt (0-2) – H2H and prediction
- Shinji HazawaHazawa – (1-1) – H2H and prediction
- Rinky HijikataHijikata – (1-0) – H2H and prediction
- Tristan SchoolkateSchoolkate – (1-0) – H2H and prediction
