Switzerland's Roger Federer serves against Spain's Rafael Nadal during the men's singles final on Day 14 of the Australian Open tennis tournament in Melbourne on Sunday.
Greg Wood/AFP/Getty Images
Venus Williams, 36, will face off against her sister Serena, 35, in Saturday's Australian Open final. Williams beat fellow American Coco Vandeweghe Thursday to reach the finals.
U.S. men's national soccer team coach Bruce Arena watches his team during a practice session on Jan. 11, in Carson, Calif. Arena returned to the U.S. team in November to salvage its run for World Cup qualification.
Jae C. Hong/AP
Jamaica's (left to right) Asafa Powell, Nesta Carter, Usain Bolt and Michael Frater celebrate their gold medal after the men's 4x100-meter relay final in Beijing in 2008. With Wednesday's announcement, the team will have to return those medals.
Shaun Botterill/Getty Images
Robby Kelley, seen here during a race in Kitzbuehel, Austria, this weekend, gained some new fans for refusing to quit in another World Cup slalom race Tuesday night.
Alexis Boichard/Agence Zoom/Getty Images