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XVI Pan American Games - Day 5

GUADALAJARA, MEXICO - OCTOBER 19: Julia Reinprecht (L) and Katherine Reinprecht of the USA field hockey team leave the field after their victory over Mexico during the XVI Pan American Games Day Five on October 19, 2011 in Guadalajara, Mexico. (Photo by Scott Heavey/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