 In 2005, Sa won two gold medals in the clean and jerk and total at the 1st Junior World Weightlifting Championships in Busan, South Korea.At the 2007 World Weightlifting Championships he ranked 5th in the 77 kg category, with a total of 353 kg.In 2008, he won a gold medal in the 77 kg class at the 2008 Summer Olympics in Beijing.