[1] In 1999, Ratanachote became a SEA Games champion in the 200 m freestyle, and later represented Thailand at the 2000 Summer Olympics.

While studying in the United States, he is a member of the USC Trojans swimming and diving team under head coach Mark Schubert.

[2] At the 1999 Southeast Asian Games in Bandar Seri Begawan, Brunei, Ratanachote powered past the entire field to earn a gold medal in the 200 m freestyle with a time of 1:53.43.

[4] After winning a gold medal from the SEA Games, his entry time of 1:53.43 was accredited under a FINA B-standard.

[5] He challenged seven other swimmers in heat three, including 17-year-olds Damian Alleyne of Barbados and Wu Nien-pin of the Chinese Taipei.