London, England (Sports Network) - Japan claimed gold medals in the 48- and 63-kilogram division on Wednesday, the first day of women's freestyle wrestling at the London Games.
Kaori Icho picked up her third straight gold in the 63kg class, downing China's Jing Ruixue.
Icho came into the games riding a 68-match win streak since a forfeited match in 2007 and hasn't lost a bout in which she actually took part in since 2003.
"I feel I have big responsibility in fighting at the Olympic Games. This is one of the biggest differences from (competing in) the world championships," noted Icho.
Jing lost for the fifth time to Icho, but nabbed a silver in her Olympic debut.
Battsetseg Soronzonbold of Mongolia took bronze, as did Russian Lubov Volosova.
Japan's Hitomi Obara and Mariya Stadnyk of Azerbaijan resumed their rivalry in the final of the women's 48-kilogram class, with Obara duplicating her 2011 World Championship victory over Stadnyk.
Obara grabbed gold in her first Olympic Games, which came following a return from retirement in 2008. Prior to that, the 31-year-old had won six world championships at the 51kg category and won consecutive titles in 2010 and '11 at the worlds in her current class.
"I had decided that this would be the last Olympic Games for me, so I am so happy," said Obara.
The 23-year-old Stadnyk, meanwhile, bettered the bronze she won at the 2008 Beijing Games and also won a world title in 2009 before taking a year off from the sport.
One of the bronze medals on Wednesday went to American Clarissa Chun, who has dealt with injury since winning the 2008 world championship. Canada's Carol Huynh also won bronze, a step back from the gold she won in this category in Beijing.
08/08 16:32:50 ET