ping-pong

The United States has never won an Olympic medal in table tennis. China has long dominated the sport, winning almost every medal since 1992. That's not likely to change at this year's Summer Olympics in London, but a group of young American women may be on their way to competing at the sport's highest levels.

Ariel Hsing, 16, already has the attributes of a fine table tennis player — quick hands, perfect balance and strong lungs. While she plays, she'll often shout "Sa!" — a meaningless word — to help relieve stress, something she's been dealing with a lot lately.