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Artistic Gymnastics NHK Trophy - Day 2

TOKYO, JAPAN - MAY 05: Rie Tanaka (C) poses with her younger brother Yusuke Tanaka (L) and older brother Kazuhito Tanaka as they are qualified for the Japan gymnastics team for the London 2012 Olympic Games after all the competition during day two of the 51st Artistic Gymnastics NHK Trophy at Yoyogi National Gymnasium on May 5, 2012 in Tokyo, Japan. (Photo by Kiyoshi Ota/Getty Images)

Sibling rivalry at the Olympics

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