The world's fastest men line up at the London Olympics Sunday in the 100-meter race where fans will be looking to see if Jamaica's Usain Bolt will be able to keep his Olympic crown.
American tennis-playing sisters Serena and Venus Williams team up Sunday for the women's doubles gold medal. Serena won the singles gold medal Saturday.
Also Saturday, American swimmer Michael Phelps ended his career with another gold medal, ending his dominance over three Olympics with 18 gold medals and 22 medallions overall.
The millionaire NBA players from the U.S. barely won their qualifying match against tough Lithuania Saturday with a score of 99-94.
Photo Gallery: Day 8 of Competition
Gold medalist Jamaica's gold medalist Shelly-Ann Fraser-Pryce (C) wins the women's 100m final at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London.
Britain's Mohamed Farah celebrates with his daughter Rihanna after winning the men's 10,000m final at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London.
South Africa's Oscar Pistorius (L) and Russia's Maksim Dyldin compete in the men's 400m heats at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London.
Jamaica's Shelly-Ann Fraser-Pryce celebrates after winning the women's 100m final at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London.
Nigeria's Regina George competes in the women's 400m semifinals at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London.
US swimmer Michael Phelps poses after receiving the trophy of the greatest olympic athlete of all time after winning gold in the men's 4x100m medley relay final during the swimming event at the London 2012 Olympic Games on August 4, 2012 in London.
US swimmer Michael Phelps (C) reacts with teammates Brendan Hansen, Nathan Adrian and Matthew Grevers after they competed in the men's 4x100m medley relay final during the swimming event at the London 2012 Olympic Games on August 4, 2012 in London.
China's Sun Yang reacts after he won gold in the men's 1500m freestyle final during the swimming event at the London 2012 Olympic Games on August 4, 2012 in London.
Russia's Andrey Demanov competes during the men's 94kg group A weightlifting event of the London 2012 Olympic Games at The Excel Centre in London on August 4, 2012.
China's Li Xuerui (R) and compatriot Wang Yihan pose with their gold and silver medals respectively after their gold medal women's singles badminton match at the London 2012 Olympic Games in London, August 4, 2012.
Gold medalist Britain's Jessica Ennis poses on the podium of the heptathlon at the athletics event during the London 2012 Olympic Games on August 4, 2012 in London.
Yamaguchi Falcao Florentino of Brazil exits the ring victorious over Fanlong Meng of China in their round of 16 Light-heavyweight (81kg) match of the London 2012 Olympic Games