Petr Bar Biryukov and Kokoro Isomura will square off in the qualifications of the Shanghai Challenger for the 1st time in their career. They are scheduled to play on Monday at 6:00 pm on COURT 7. In the following lines you can find the head to head analysis and prediction.
Prediction, odds and live streaming
The pick for Tennis Tonic is Petr Bar Biryukov who should win in 3 sets.
As per the initial odds, Petr Bar Biryukov is the pick to win this match.
Petr Bar Biryukov -> 1.42
Kokoro Isomura -> 2.7
Click here to see the updated quotes and live streaming (only selected countries - USA excluded).
To be able to watch live streaming bet365, a funded account is required or you need to have placed a bet in the last 24 hours. 18+ BeGambleAware.
Here where top tennis events are broadcasted or streamed online (ATP, WTA).
At the challenger level, there will be free live streaming on Challenger TV.
Â
Prediction and head to head Petr Bar Biryukov vs. Kokoro Isomura
There is no head to head record between Petr Bar Biryukov and Kokoro Isomura since this will be the first time that they will clash against each other in the main tour.
Petr Bar Biryukov
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 48-30 | 48-29 | 0-0 | 0-1 | 0-0 | 0-0 |
| 2024 | 43-23 | 43-22 | 0-0 | 0-1 | 0-0 | 0-0 |
| 2023 | 30-20 | 15-9 | 9-9 | 6-2 | 0-0 | 0-0 |
| 2022 | 28-17 | 25-14 | 1-2 | 2-1 | 0-0 | 0-0 |
| 2021 | 15-18 | 3-1 | 2-10 | 10-7 | 0-0 | 0-0 |
Ranked no. 322 (career-high), the Russian reached the qualifications after defeating Ramkumar Ramanathan 7-6(6) 7-6(3).
In the qualifications, Bar Biryukov had a good straight sets win against Ramanathan (7-66 7-63). During the match, Bar Biryukov scored 85 points vs Ramanathan’s 73. The Russian was very aggressive to blast 42 winners.
Regarding the service games, Bar Biryukov struck 17 aces and he committed only 1 double fault. Petr Bar Biryukov was quite efficient on serve to win 86% (42/49) of his 1st serve and 64% (16/25) on the second serve. This was the main reason for not conceding a single break during the match.
Bar Biryukov has a solid record in the last 5 years having won 61% of his matches (149-97). 33-18 on hard in 2025. Talking about his performance on the same surface of this competition, Bar Biryukov has a composed119-64 match record in the last 5 years on hard.
Bar Biryukov’s best result of the current year was reaching the final in M15 Nonthaburi and M15 Astana.
Petr has an aggregate 33-19 win-loss record in 2025, 33-18 on hard (See FULL STATS).
Previously in the Shanghai Challenger
The Russian has never competed in this tournament before.
Kokoro Isomura
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 34-31 | 32-29 | 0-0 | 2-2 | 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. 480, the Japanese got to the qualifications after beating Ajeet Rai 7-6(4) 7-6(6).
In the qualifications, The Japanese had a good straight sets win against Rai (7-64 7-66). During the match Isomura scored 98 points vs Rai’s 91. The Japanese was very aggressive to blast 46 winners.
About the serving games, Isomura managed to score 2 aces and he committed only 3 double faults. Overall, Kokoro Isomura was extremely effective on serve to win 74% (46/62) of his 1st serve and 56% (20/36) on the second serve. However, this didn’t prevent his to concede the serve once. Kokoro broke Rai once after converting 14% of his break points (1/7).
The Japanese’s best result of the current year was getting to the final in M15 Luan.
The Japanese has an aggregate 27-22 win-loss record in 2025, 25-21 on hard (See FULL STATS).
H2H Performance in the tournament
Matches, sets, games and points
| Points | Bar Biryukov | Isomura |
|---|---|---|
| Match played | 1 | 1 |
| Tot Set | 2 | 2 |
| Tot Games | 26 | 26 |
| Pts | 85-73 | 98-91 |
| Total Points | 158 | 189 |
| Winners | 42 | 46 |
| %Winners | 49% | 47% |
Both Bar Biryukov and Isomura played 1 match. Also both players started their run from the qualifications.Both players have not conceded a single set in this event so far. Talking about their workload, Bar Biryukov and Isomura have played the same amount of sets 2. They also played the same amount of games (26). The Russian scored 42 winners (49% of the total points). On the other side, Kokoro struck 46 winners (47%).
Serve Performance
| Serve | Bar Biryukov | Isomura |
|---|---|---|
| Aces | 17 | 2 |
| Avg per match | 17 | 2 |
| 1st in | 49/74 | 62/98 |
| %1st in | 66% | 63% |
| 1st pts | 42/49 | 46/62 |
| %1st pts | 86% | 74% |
| 2nd pts | 16/25 | 20/36 |
| %2nd pts | 64% | 56% |
Bar Biryukov struck 17 aces . Isomura recorded 2 aces . Bar Biryukov won 86% points behind his first serve. He pretty effective on his second serve to win 64% of the points. On the other side, Isomura won 74% of the points on his first serve. He had a solid display on his second serve to win 56% of the points.
How they played the important points
| Breaks | Bar Biryukov | Isomura |
|---|---|---|
| Won | 0 | 1 |
| Converted | 0/2 | 1/7 |
| % Converted | 0% | 14% |
| Conceded | 0 | 10 |
| Saved | 0 | 9 |
| % Saved | 0% | 90% |
| Times Broken | 0 | 1 |
Bar Biryukov hasn’t manged yet to break his opponent. He didn’t manage to even clinch a single break point. Petr extremely effective on his serve as he has never conceded a single service game after saving 0 break points without even conceding a single break point. Kokoro broke his opponent once with a 14% conversion rate. The Japanese conceded his serve once and he saved 90% of the break points that he conceded.
| Bar Biryukov | |||
| Q1 Ramanathan |
Total | ||
|---|---|---|---|
| Score | 7-66 7-63 | ||
| Tot Set | 2 | 2 | |
| Tot Games | 26 | 26 | |
| pts | 85-73 | 85-73 | |
| Total points | 158 | 158 | |
| Winners | 42 | 42 | |
| %Winners | 49% | 49% | |
| SERVE | |||
| Aces | 17 | 17 | |
| Double Faults | 1 | 1 | |
| 1st in | 49/74 | 49/74 | |
| % 1st in | 66% | 66% | |
| 1st pts | 42/49 | 42/49 | |
| % 1st pts | 86% | 86% | |
| 2nd pts | 16/25 | 16/25 | |
| % 2nd pts | 64% | 64% | |
| Breaks | |||
| Won | 0 | 0 | |
| Converted | 0/2 | 0/2 | |
| Converted % | 0% | 0% | |
| Conceded | 0 | 0 | |
| Saved | 0/0 | 0 | |
| Saved % | – | 0% | |
| Times Broken | 0 | 0 | |
| Isomura | |||
| Q1 Rai |
Total | ||
|---|---|---|---|
| Score | 7-64 7-66 | ||
| Tot Set | 2 | 2 | |
| Tot Games | 26 | 26 | |
| pts | 98-91 | 98-91 | |
| Total points | 189 | 189 | |
| Winners | 46 | 46 | |
| %Winners | 47% | 47% | |
| SERVE | |||
| Aces | 2 | 2 | |
| Double Faults | 3 | 3 | |
| 1st in | 62/98 | 62/98 | |
| % 1st in | 63% | 63% | |
| 1st pts | 46/62 | 46/62 | |
| % 1st pts | 74% | 74% | |
| 2nd pts | 20/36 | 20/36 | |
| % 2nd pts | 56% | 56% | |
| Breaks | |||
| Won | 1 | 1 | |
| Converted | 1/7 | 1/7 | |
| Converted % | 14% | 14% | |
| Conceded | 10 | 10 | |
| Saved | 9/10 | 9 | |
| Saved % | 90% | 90% | |
| Times Broken | 1 | 1 | |
Head 2 Head
LLLWWLWLLW
LLLLLWWWLL 
Upcoming matches in the draw
- Daniel EvansEvans – Linang XiaoXiao (0-0) – H2H and prediction
- Hiroki MoriyaMoriya – Yaojie ZengZeng (0-0) – H2H and prediction
- Yasutaka UchiyamaUchiyama – (0-1) – H2H and prediction
- Yoshihito NishiokaNishioka – (0-1) – H2H and prediction
- Rigele TeTe – Omar JasikaJasika (0-0) – H2H and prediction
- Jie CuiCui – Yu Hsiou HsuHsiou Hsu (3-0) – H2H and prediction
- Tsung-Hao HuangHuang – Sergey FominFomin (0-0) – H2H and prediction
- Yuta ShimizuShimizu – Sho ShimabukuroShimabukuro (3-1) – H2H and prediction
- Oliver CrawfordCrawford – (0-0) – H2H and prediction
- Rio NoguchiNoguchi – Yosuke WatanukiWatanuki (0-0) – H2H and prediction
- Kasidit SamrejSamrej – Masamichi ImamuraImamura (0-3) – H2H and prediction
- Beibit ZhukayevZhukayev – (0-0) – H2H and prediction
- Joshua CharltonCharlton – Renta TokudaTokuda (0-0) – H2H and prediction
- Giulio ZeppieriZeppieri – Gauthier OnclinOnclin (0-1) – H2H and prediction
