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Featherweight (150 lbs)|3R
🇰🇿Kaster Sarkytbek
8-2 / 5'8" (172cm)
Reach 70.1" (178cm) / 2 Wins
VS
🇮🇩R. Siahaan
9-2 / 5'8" (173cm)
Reach 68.9" (175cm) / 8 Wins / Wushu Sanda
DebutFinish Stats
* Includes both professional and amateur records
Win Methods
Kaster Sarkytbek
R. Siahaan
* Includes both professional and amateur records
Recent Fights
Kaster Sarkytbek
R. Siahaan
* Includes both professional and amateur records
Kaster Sarkytbek
Kaster Sarkytbek is a professional mixed martial artist from Kazakhstan who competes in the featherweight division. Standing 5'8" with a 70.1" reach, he currently holds a record of 8 wins and 2 losses. Competing frequently in the JCK organization, Sarkytbek is known for his effective grappling and ground strikes. He is on a two-fight win streak, most recently defeating Wuleiyifu in May 2026 and Zikiryo Kholmurodzoda in January 2026, both via first-round technical knockouts.
R. Siahaan
Ronal Siahaan is an Indonesian featherweight mixed martial artist with a professional record of 9-2-0. Competing primarily in One Pride MMA, he utilizes a foundation in Wushu Sanda to implement a versatile and dangerous grappling game. He is currently on an impressive eight-fight winning streak. His most recent victories include a submission win over Windri Patilima via rear naked choke in April 2026, a decision win over Alan Darmawan, and a submission of Sukma Prawira Aditya.