Female sumo wrestlers

Sumo wrestling from Japan is among the world's oldest sports, dating back at least 1,500 years. The rules are simple: Square off with an opponent, in a ring lined with sand, then try to push the other person out. Another rule: Japanese professional sumo is also off limits to women. As The World's Patrick Winn reports, Japanese women wrestlers who achieve champion status at international sumo events are frustrated to face prejudice back home.