

A relentless Thai power-puncher who stormed to world titles in two weight classes, defending his crown with formidable consistency.
Poonsawat Kratingdaenggym, born Chalermwong Udomna, was a fighter who embodied the classic Thai boxing ethos: tough, technically sound, and ferociously aggressive. Fighting under the name of the famous energy drink brand, he carved a path through the bantamweight and super bantamweight divisions with a high-pressure, come-forward style. His breakthrough came when he captured the WBA bantamweight title, a victory that announced him on the world stage. He wasn't a flashy superstar but a workmanlike champion who successfully defended his title multiple times before moving up to win another world belt. His career stands as a testament to the deep pool of talent in Thailand's boxing scene, producing champions who dominate for years with little fanfare outside their home country.
1965–1980
The latchkey kids. Raised during divorce, recession, and the end of the Cold War. Skeptical, self-reliant, media-literate. They invented indie culture, grunge, and the early internet — then watched the Boomers take credit.
Poonsawat was born in 1980, placing them squarely in the Generation X. The events that shaped this generation — economic uncertainty, the end of the Cold War, and the rise of personal computing — shaped the world they entered and the choices available to them.
The biggest hits of 1980
#1 Movie
The Empire Strikes Back
Best Picture
Ordinary People
#1 TV Show
Dallas
The world at every milestone
John Lennon shot and killed in New York
Live Aid concerts raise money for Ethiopian famine
European Union officially established
Dolly the sheep cloned
Google founded; Clinton impeachment
September 11 attacks transform the world
Deepwater Horizon oil spill; iPad launched
COVID-19 pandemic shuts down the world
His ring name, 'Kratingdaenggym', is the Thai name for the Red Bull energy drink brand.
He avenged an early career loss to Somsak Sithchatchawal, who later also became a world champion.
He retired in 2012 after a knockout loss to then-unbeaten Guillermo Rigondeaux.
“My fists wrote the story; the belt is just the cover.”