He is former four-time Lumpinee Stadium champion across three divisions, as well as the 2002 Sports Writers Association of Thailand Fighter of the Year, who was famous in the 2000s and 2010s.
Nicknamed "Fierce Tiger of Khmer", he was especially known for his powerful right kicks and is now often regarded amongst the greatest fighters in the history of Muay Thai.
[2] In 2002 he beat Orono Wor Petchpun at Lumpinee Boxing Stadium for the title Featherweight champion of Thailand.
In 2004 he beat Yodsanklai Fairtex, then fought Anuwat Kaewsamrit in a fight that would determine who would win the same award, but this time he was KO'd by a punch.
At the annual Lumpinee Boxing Stadium birthday show in December Singdam was matched against F16 Rachanon and he won by TKO at the end of round four after F-16 was unable to continue from because of damage caused to his arm.
On June 8 Singdam fought Wanchalerm Uddonmuang for the title of Lumpinee Boxing Stadium and won a decision.
On 27 July, Singdam fought Craig Coakley for the WBC Muay Thai Super-lightweight Diamond title at YOKKAO 42 in Dublin, Ireland.
Many experts and spectators vow that Coakley was the superior fighter on the night and landed a significant number of strikes more than Singdam.