Kokoro Isomura and Shinji Hazawa will fight against each other in the 1st round of the Brisbane 1 Challenger for the 3rd time in their career. They are scheduled to compete on Tuesday at 10:00 am on COURT 6. In the following paragraphs, you can find the head to head analysis and 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 play each other. 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 squared off, 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 | 10-10 | 10-10 | 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), the Japanese got to the 1st round after defeating 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 quite aggressive to blast 31 winners.
Talking about the service games, Isomura couldn’t to score even 1 ace throughout 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. Isomura broke Sinclair twice after converting 22% of his break points (2/9).
Overall Performance in this tournament
The Japanese started his run at this tournament from the qualifications. In the main draw, he has surrendered 1 set in this event to win 54% of the points he played.
Isomura has a winning match record in the last 5 years having won 55% of his matches (99-81). 5-2 on hard in 2025. Talking about his performance on the same surface of this competition, Isomura has an aggregate68-60 win-loss record in the last 5 years on hard.
Isomura has an overall 5-2 win-loss record in 2025, 5-2 on hard (See FULL STATS).
Previously in the Brisbane 1 Challenger
Kokoro has never competed in this tournament before.
Shinji Hazawa
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 11-10 | 11-10 | 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, Hazawa reached 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. Shinji was exceptionally aggressive to blast 40 winners.
About the serving games, Hazawa made 5 aces and he committed only 1 double fault for the entire match. Shinji Hazawa was pretty 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 win 53% of the points he played.
The Japanese has an aggregate 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 dropped 1 set while Shinji Hazawa hasn’t dropped 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, Hazawa made 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 managed to score 1 ace (0.5 per match). Hazawa also made 10 aces (5 per match). Isomura won 73% points behind his first serve. He had a solid display 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 |
Isomura broke his opponents 7 times with a 35% conversion rate. Isomura surrendered 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. The Japanese 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
LWLWLWLLLW
LLWWWLLLWL Tennis Scores in Brisbane 1 Challenger
- Jason Murray KublerMurray Kubler – Hiroki MoriyaMoriya (6-0 6-4) – Stats, scores, rankings
- Rinky HijikataHijikata – Hayden JonesJones (6-73 6-4 6-0) – Stats, scores, rankings
- James McCabeMcCabe – Moerani BouzigeBouzige (6-1 7-64) – Stats, scores, rankings
- Bernard TomicTomic – Charles BroomBroom (6-1 0-6 7-63) – Stats, scores, rankings
- Adam WaltonWalton – Andre IlaganIlagan (6-2 6-4) – Stats, scores, rankings
Upcoming matches in the draw
- Bernard TomicTomic – Jason Murray KublerMurray Kubler (1-0) – H2H and prediction
- 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
