Kasidit Samrej and Kokoro Isomura will play each other in the 1^st round of the Astana Challenger for the 2^nd time in their career. They are scheduled to play on Tuesday at 4:30 pm on COURT 4. In this post, we analyze their head to head performance and prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Kasidit Samrej who should win in 3 sets.

As per the initial odds, Kasidit Samrej is the pick to win this match.
Kasidit Samrej -> 1.4
Kokoro Isomura -> 2.68

 

 

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At the challenger level, there will be free live streaming on Challenger TV.

 

Prediction and head to head Kasidit Samrej vs. Kokoro Isomura

This will be the 2^nd time that Kasidit Samrej and Kokoro Isomura face off. The head to head is 1-0 for Samrej (see full H2H stats), 1-0 on hard.

The last time that they played, Samrej won 6-2 6-1 in the 1^st round in M15 Seremban back in 2022.

Kasidit Samrej

Ranked no. 406, the Thai will start his run in the Astana Challenger after he played his last match in M15 Astana where he lost 3-6 7-5 6-3 to Pleshivtsev in the 1^st round on the 4^th of August.

Samrej has an overall 25-18 win-loss record in 2026, 19-13 on hard (See FULL STATS).

The Thai’s best result of the current year was reaching the semifinal in M25 Nakhon Pathom.

Talking about his overall career, Kasidit has an overall 180-135 record. He has a positive 151-120 record on hard.

Previously in the Astana Challenger

Samrej has never competed in this tournament before.

Kokoro Isomura

Ranked no. 566, Kokoro got to the 1^st round after beating Uisung Park 6-2 6-2 and Mukund Sasikumar 1-6 7-6(3) 6-3.

In the qualifications against Kumar Mukund, The Japanese recovered from a 1-set down deficit before winning (1-6 7-6³ 6-3).During the match Isomura scored less points (7) than Kumar Mukund. In fact, the world no. 406 won 93 points vs Kumar Mukund’s. That means that Isomura was more focused during the important points. Isomura was pretty aggressive to blast 41 winners.

About the serving games, Isomura scored 2 aces and he was not very steady on his 2nd serve to score 11 double faults. Kokoro Isomura lost the serve 5 times and he saved 6 break points. Furthermore, Isomura put 58% of his first serves in, winning 76% (41/54) of the points behind his 1st serve and 31% (12/39) on the 2nd serve. The Japanese broke Kumar Mukund 5 times after converting 45% of his break points (5/11).

Overall Performance in this tournament

Isomura started his run at this tournament from the qualifications. In the main draw, he has conceded 1 set in the tournament to win 51% of the points he played.

ATP Astana Challenger - Kokoro Isomura's projected path

Kokoro has an overall 22-21 win-loss record in 2026, 19-20 on hard (See FULL STATS).

Previously in the Astana Challenger

Previously, his best result was reaching the 1^st round in 2025. See his history.

Tennis Scores in Astana Challenger

• Semen PankinPankin – Dominik PalanPalan (6-1 6-4) – Stats, scores, rankings
• Khumoun SultanovSultanov – Alexandr BindaBinda (6-3 6-2) – Stats, scores, rankings
• Lucio RattiRatti – Tai SachSach (6-3 6-3) – Stats, scores, rankings
• Hayato MatsuokaMatsuoka – Koki MatsudaMatsuda (6-3 6-4) – Stats, scores, rankings

Upcoming matches in the draw

• Sidharth RawatRawat – Mert AlkayaAlkaya (0-0) – H2H and prediction
• Aziz DougazDougaz – Alec DeckersDeckers (0-0) – H2H and prediction
• Vadym UrsuUrsu – (0-0) – H2H and prediction
• Fajing SunSun – (0-0) – H2H and prediction
• Masamichi ImamuraImamura – (0-0) – H2H and prediction
• Sergey FominFomin – (2-3) – H2H and prediction
• Aziz OuakaaOuakaa – Jie CuiCui (0-0) – H2H and prediction
• Sanhui ShinShin – (0-0) – H2H and prediction
• Kasidit SamrejSamrej – (1-0) – H2H and prediction
• Takuya KumasakaKumasaka – Colin SinclairSinclair (0-0) – H2H and prediction