Jamaica is hoping to continue its dominance on the track at the London Olympics.

One of the most anticipated events Wednesday will be the finals of the women's 200-meters, which features a lineup of the world's best sprinters.

Jamaica's Veronica Campbell-Brown is seeking to become the first woman to win gold medals in the same individual track and field event in three straight Olympics. The world's fastest man, Jamaican Usain Bolt, takes part in the semifinals of the 200-meter race, after winning gold in the 100-meter sprint in record time on Sunday.

In early action Wednesday, Hungary won gold medals in the men's 1,000-meter kayak doubles and the women's 500-meter kayak fours.

Germany won four medals total in sprint canoe events, including a gold in the men's 1,000-meter singles.

In sailing, Nathan Outteridge and Iain Jensen finished in first place in a men's event , giving Australia a second sailing gold at the London Games. Also, Switzerland's Steve Guerdat won the individual show jumping gold at Greenwich Park.

On the 12th day of the London Games, China leads the total medal count with 74, followed by the United States with 71. Britain and Russia are tied for third with 48.