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Brett Fraser, Shaune Fraser

Cayman Island's Brett Fraser, right, is embraced by his brother Shaune after winning the men's swimming 200m freestyle at the Pan American Games in Guadalajara, Mexico, Tuesday, Oct. 18, 2011. Brett Fraser won the gold medal and his brother Shaune the silver one. (AP Photo/Silvia Izquierdo)

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