08/30/2011 12:31 pm ET Updated Oct 30, 2011

What It Takes To Be A US Open Ball Person

When tennis greats take the court each year at the US Open, they aren't the only examples of athletic prowess inside the jam-packed stadiums at the Billie Jean King National Tennis Center in Queens.

On the sidelines are ball people of all ages ready to sprint, throw, catch, and retrieve with the stealth of wildcats. And because of the athletic skills required, not everyone makes it to the tournament.

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