About Ryoko Tani
Ryoko Tani is a Japanese politician and retired female judoka. Competing in the extra-lightweight (48 kg) class, she won a record seven world titles and five Olympic medals including two golds at Sydney 2000 and Athens 2004. Her first major title was at the 1990 Fukuoka International Women's Judo Championships, a tournament she went on to win 13 years in a row. In 1993, she won her first world title and received her fourth dan. This record seven wins was only beaten by French judoka Teddy Riner in 2015, in an era when world championships had become annual events.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.