Career
On 26 September 2009 Poonsawat defeated Irish boxer Bernard Dunne in the 3rd round to claim the WBA World Super Bantamweight title. On 2 October 2010 Poonsawat lost to Ryol Li Lee in a stunning upset. This was Kratingdaenggym"s first loss since July 2006 against Volodymyr Sydorenko.
Poonsawat was due to fight Guillermo Rigondeaux of Cuba in an attempt to regain the WBA Super Bantamweight title.
However, on December 14, 2012, after Olympic-style drug testing, it was revealed that Poonsawat had failed a medical exam, and would not be able to participate in the bout. Rumors came about that Poonsawat had tested positive for Human Immunodeficiency Virus, but it was later revealed that he suffers from thalassemia, an affliction that affects red blood cells and causes anemia.
Due to this, his boxing career has ended.