At the age of 12, Ogasawara began curling in her hometown
Tokoro, joining
Akiko Katoh's junior team together with
Yumie Hayashi. Then Ogasawara became the second for the team. The team represented Japan at four
World Junior Curling Championships (1996, 1997, 1998 & 1999), winning a silver medal in 1998 and another silver in 1999. The team later represented Japan at the
2002 Winter Olympics, finishing in 8th place with a 2-7 record. After the 2001-2002 season, Ogasawara and her longtime teammate Hayashi moved to
Aomori and formed a new team there. The team, called '
Team Aomori', represented Japan at the
2006 Winter Olympics. At the Games, Ogasawara threw last stones as skip and led her team to a 7th-place finish with a 4-5 record, including a surprise win over one of the usual curling powerhouses, Canada. After the 2005-2006 season, Ogasawara and Hayashi announced their temporary retirement. Ogasawara got married and had a child before returning to the sport in the 2011-12 season. In 2011, Ogasawara and Hayashi, whose name had changed to
Yumie Funayama after marriage, formed a new team in
Sapporo. The team qualified for the
2014 Winter Olympics through the
Olympic Qualification Event held in December 2013. At the Olympics, Ogasawara, a mother of one, was chosen to be
Japan's flag bearer, as it is unusual for women in Japan to compete in sports after having children. At the Games, she threw last stones as skip, and the team finished in 5th place with a 4-5 record, winning against two former World Championship teams, Switzerland's
Mirjam Ott and China's
Wang Bingyu. ==Teammates==