Poonsawat Kratingdaenggym

Chalermwong Udomna, who boxes as Poonsawat Kratingdaenggym, is a retired professional boxer from Thailand who fought in the Super bantamweight division. He is a former WBA Regular Bantamweight and Super Bantamweight World Champion, and a former PABA regional Bantamweight and Superbantamweight.

Career

Poonsawat fought under the management of Niwat Laosuwanwat, who also managed legendary Thai boxer Khaosai Galaxy, the former WBA Junior bantamweight World Champion.
On 26 September 2009 Poonsawat defeated Irish boxer Bernard Dunne in the 3rd round to claim the WBA World Super bantamweight title. Then Poonsawat defended his title two more times until May 2010.
On 2 October 2010 Poonsawat lost to Ryol Li Lee in a stunning upset. This was his first loss since July 2006 against Volodymyr Sydorenko.
Poonsawat was scheduled to face Cuba's Guillermo Rigondeaux in an attempt to regain the WBA Super bantamweight title. However, on 14 December 2012, following Olympic-style drug testing, he failed a medical examination and was ruled unfit to compete. Initial rumors suggested he had tested positive for HIV, but it was later confirmed that he was suffering from thalassemia, a blood disorder that impairs red blood cell function and causes anemia. As a result, his boxing career came to an end.