Knockout CP Freshmart extended his unbeaten run to 14 wins after successfully retaining his WBA minimumweight title in Nakhon Ratchasima yesterday.
In the first title defence of his 105-pound crown, Knockout secured a convincing 118-109, 117-111, 118-110 win over Japanese challenger Shin Ono, ranked 14th in the division.
Throughout the bout, Ono rarely caused trouble for the Thai and was knocked down in the 10th round of the 12-round fight.
With the victory, the Surin-born fighter, whose real name is Thammanoon Niyomtrong, is now 14-0 (6KOs).
He won the title after dethroning Byron Rojas of Nicaragua in a mandatory fight in Khon Kaen in June.
The 33-year-old Ono, who lost to compatriot Katsunari Takayama in an IBF minimumweight championship fight in his only previous title shot in May 2014, suffered his eight losses against 19 wins (3KOs) and three draws.
It was the fourth defeat in his last six bouts.
Knockout admitted that his performance was not so good because his opponent is a southpaw.
He vowed to work harder to improve his skills for future matches.
"My performance today may not impress the fans,'' Knockout said. "I will try to do better next time."
His manager Wirat Wachirarattanawong said he was satisfied with the result but not happy with his performance.
"His performance was not impressive. He lacked accuracy and his defence was quite poor. He needs more experience to become a better boxer," he said.
He said his next opponent is likely to be another Japanese boxer.
Knockout is currently one of Thailand's only two world champions with the other being WBC minimumweight title-holder Wanheng Menayothin.
Meanwhile, three-division winner Hozumi Hasegawa of Japan has announced his retirement, bringing his decorated 17-year boxing career to an end with a 36-5 record (16KOs), Kyodo reported.
The 35-year-old fighter retired as WBC super-bantamweight champion after he defeated Mexican Hugo Ruiz by a technical knockout in September, becoming the fourth Japanese boxer to sweep three weight classes.
"I've decided to retire, with the Sept 16 bout being my last, when I conquered my third division," Hasegawa said.
"It was a boxing career that had more [success] than I expected."
Hasegawa won his first world title in April 2005, beating WBC bantamweight champion Veeraphol Sahaprom of Thailand.