He is the 2023 Rajadamnern World Series Super Welterweight (70 kg) champion.
[1] For the June 2024 rankings, Combat Press ranked Thananchai Sitsongpeenong the second best super welterweight(154 pounds, 70 kilograms).
[2] Thananchai was taught Muay Thai from a young age by his father.
[3] In 2020, Thananchai moved from Rachanon gym to Sitsongpeenpong to chase his dream of becoming a World Champion.
[4] On March 11, 2023, Thananchai defeated Nauzet Trujillo at KSP Promotion in Kuwait to win the WBC Muaythai Super Welterweight (154lb) Championship.