Under the ring name Kiatnarong Luksakaew, he had his first Muay Thai fight at 14-years-old where he won by a 2nd round knockout.

In 1987, he won the junior flyweight championship awarded by the Northeastern Professional Boxing Council of Thailand after beating "The Elbow Hunter of 100 Stitches" Yodkhunpon Sittraiphum in Roi Et province.

[1] 1989 was a significant year in Therdkiat's career as he would beat Samransak Muangsurin, Superlek Sorn E-Sarn, Kawnar Sor.Khetallingchan, among other yodmuay (elite fighters).

[2] After losing to Jongsanan Fairtex in August 1992, the Onesongchai promotion had Therdkiat be recruited by the Nongkeepahuyuth gym in Bangkok due to his inconsistent performances since 1990.

[2][3]: 0:47  Afterwards, Therdkiat held a 5-win streak against 4 fighters who resided at the top of the featherweight division in October 1992 to March 1993, during which he knocked out Jongsanan with a head kick.

In his first match against Oley Kiatoneway, Therdkiat was knocked down 3 times by punches in the first round, resulting in a TKO loss.

[2][3] After losing the Lumpinee Featherweight title to Mathee Jadeepitak in 1994, Therdkiat began performing worse in the following years of his career.