He is a former Lumpinee Stadium Super Featherweight Champion who was active in the 1970s.
At 14 he followed his cousin Noppadej to the Kiatsuriya camp in Bangkok.
[1] Khunponnoi reached the status of top fighter in just three years after moving to Bangkok, being matched up with elite opposition by 1974.
He defeated Pudpadnoi Worawut by decision for the Lumpinee Stadium 130 lbs title on July 26, 1974.
[3] By the end of his career in 1980 received purses as high as 100,000 baht and defeated many notable champions of his era such as Jocky Sitkanpai, Bundit Singprakarn, Narongnoi Kiatbandit or Saengsakda Kittikasem.