Watcharachai started Muay Thai at the age of 12 under the name Pornchainoi Klomlaichang.
Watcharachai retired in 2007 and went back to work on a farm for a time.
In 2011 he accepted a job as a trainer for Tiger Muay Thai in Phuket.
[1] In 2012 Watcharachai opened his own camp where he trained high level fighter such as Kaimukkao Por.Thairongruangkamai and Palangpon Watcharachaigym.
[2] He later coached in other camps in Thailand and overseas, since 2019 he lives and teaches in Australia.