Jamaica's Usain Bolt wins the men's 200m final at the National Stadium at the 2008 Beijing Olympic Games on August 20, 2008. Bolt broke the men's 200 metres world record on Wednesday timing 19.30 seconds as he clinched the Olympic Games gold to add to his 100m crown. [Agencies]

Elsewhere, Yin Jian sprung a surprise in sailing, winning China's first gold in sailing. Yin hailed it as the ultimate reward for years of battling injuries and spending long periods training away from home.

"When the (Chinese) flag was being raised I was thinking about the hardship I have gone through for this gold medal," she said.

On a day, when only 11 golds were on offer, China took two - the other in women's taekwondo, taking its gold haul to 45. World champion Wu Jingyu won the women's under 49-kg class on the first day of the Games taekwondo competition.

Jamaica's Usain Bolt wins the men's 200m final at the National Stadium at the 2008 Beijing Olympic Games on August 20, 2008. Bolt broke the men's 200 metres world record on Wednesday timing 19.30 seconds as he clinched the Olympic Games gold to add to his 100m crown. [Agencies]

This is first time China has won this class since the taekwondo entered the Games in Sydney 2000.

Mexico's Guillermo Perez won the men's under 58-kg gold beating Dominica's Yulis Gabriel Mercedes. Afghanistan's Rohullah Nikpai won one of the two bronzes for men - and his country's first Olympic medal ever.

In women's hockey, China beat defending champion Germany 3-2 to move into the final, where it faces the Netherlands.

Agencies contributed to the story