When he was around the age of 16, while playing a game of football, his friends encouraged him to participate in a nearby Muay Thai match as a fighter needed an opponent his size.

[3] Karuhat would become popular after a successful run in the suburban Bangkok stadiums at 100 lbs/45.36 kg and later attracted further attention of the Thai audiences by beating Nuengthoranee Petchyindee.

After winning ten of his next twelve matches, including over elite fighters such as Toto Pongsawang, Panomrunglek Chor.Sawat, and Pairojnoi Sor Siamchai, he'd be given the opportunity to challenge for Hippy Singmanee's Lumpinee Mini Flyweight title in 1987.

[6] After winning seven of next eight matches, including over elite fighters such as Kaensak Sor.Ploenjit and Pairojnoi Sor Siamchai, he'd be given another opportunity to challenge Hippy Singmanee for the vacant Lumpinee Light Flyweight title in 1988.

Nevertheless, Karuhat's fame continued to grow and his talent prompted the Thai media to nickname him The Top Master (ยอดเซียน / Yodsian) among an array of other names referencing his skills.

[2] Karuhat's cornerwoman and boss Mrs. Suwimon Pinsathienket was often shooed away from his corner during fights as women were heavily discouraged by superstition from touching the ring,[8] but she would get on top of it anyway in order to give him advice between rounds.

Undeterred after losing his two title opportunities, Karuhat would defeat elite fighters such as Hippy Singmanee, Kaensak Sor.Ploenjit, Veeraphol Sahaprom, Oley Kiatoneway, and Paruhatlek Sitchunthong.

In their 4th fight Karuhat would give a difficult defensive performance against him, shutting down Kaensak's trademark counter-kicking style and consistently manipulating his balance.

[1] The Thai audiences referred to him by several nicknames such as The Fabulous Fighter, Aysian (The Talented), Yodmuay Atchariya (The Muay Genius), and Yodsian (The Top Master).

While he took fewer fights in that year as a result, he was still able to secure the Lumpinee Super Bantamweight belt by elbow KO and beat Dokmaipa Por.Pongsawang as well as Silapathai Jockygym.

After he took a hiatus for several years, Karuhat began fighting again despite not training seriously, resulting in him getting fewer wins and a KO loss against Alexei Pekarchyk.