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Olympics Day 9 - Tennis

LONDON, ENGLAND - AUGUST 05: Gold medalists Serena Williams of the United States and Venus Williams of the United States celebrate during the medal ceremony for the Women's Doubles Tennis on Day 9 of the London 2012 Olympic Games at the All England Lawn Tennis and Croquet Club on August 5, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)

Sibling rivalry at the Olympics

August 11, 2012

The competition is already fierce as Olympic athletes strive for a gold medal, but the heat intensifies when athletes’ siblings are thrown into the mix. Whether they’re teammates, training partners, or in the midst of an intense rivalry, these Olympic siblings from all over the world will push each other to perform their best this year for country and family pride. --By Paul Rosales and Carla Thorpe, Yahoo! Sports