One of the most anticipated events Wednesday at the 2012 London Olympics will be the finals of the women's 200-meters, which features a sterling 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 consecutive Olympics. Her closest rival in the race is American Allyson Felix, the three-time world champion who finished second behind Campbell-Brown in the 2004 and 2008 Games.

Also in the race is 400-meters gold medalist Sanya Richards-Ross of the United States, and Shelly-Ann Fraser-Pryce, the winner of Saturday's 100-meter race in which her fellow Jamaican Campbell-Brown took bronze.

Another Jamaican track star, Usain Bolt, takes part in the semifinals of the 200-meter race in his quest to defend his victory in the 2008 Beijing Games.

London's Olympic Stadium will also be the scene for the finals of the women's long jump, women's 400 meters and the men's 110-meter hurdles.

Another much anticipated gold medal event will be in women's beach volleyball, when two-time gold medalists Kerry Walsh Jennings and Misty May-Treanor of the United States will take on their younger compatriots, April Ross and Jennifer Kessy.

After 11 full days, China leads the overall Olympic medals count with 73, followed by the United States with 70 and Britain in third place with 48. In the gold medal count, China has 34, the U.S. 30 and Britain 22.