[2] She won the gold medal at the 2016 Summer Olympic women's doubles alongside Ayaka Takahashi.

Despite playing doubles, she was also a finalist in girls' singles at the 2010 BWF World Junior Championships in Mexico.

In 2016, she won the women's doubles gold medal at the Summer Olympics in Rio de Janeiro, Brazil.

[3] She and her women's doubles partner Ayaka Takahashi were also honored with the Female Player of the Year award.

Matsutomo and Takahashi became the first non-Chinese pair to win the women's Olympic doubles title since the 1996 Atlanta Games, giving Japan its second medal in the event after Mizuki Fujii and Reika Kakiiwa won silver at the 2012 London Olympics.