- Fight Name: Rattachai Wor.Walapon
- Fight Record: Over 300 Fights
- Titles: 3x Lumpinee Stadium Champion
Kru Nai or Rattanachai Wor.Walapon , Owner : Operator of Rattachai Muay Thai Gym. Born in Nakhon Ratchasima (Korat), Thailand. Nai has been a Muay Thai fighter since He was 8 years old. Nai had ranked up well over 300 fights and has many years of experience fighting at Korat (his hometown) and Lumpinee and Rajadamnern Stadium in Bangkok. He’s fought and won the illustrious Lumpinee Championship 3 times and been teching for more than 10 years.