Inna Deriglazova and Larisa Korobeynikova of the Russian Olympic Committee have won silver and bronze medals respectively in individual women's foil fencing competition.
Lee Kiefer of the United States won gold.
Uzbek gymnast Oksana Chusovitina, who won a golden medal at the Barcelona 1992 Olympic Games, announced on Sunday that she would end her career after the Tokyo Olympics.
The 46-year-old legend, the only gymnast to compete in eight straight Summer Olympic Games that took place since 1992, did not make it into the artistic gymnastics' final in Tokyo earlier in the day.
"That is all for sure. I will not return to this. I am already 46 years old! I have so many things to do, it is time to catch up," Chusovitina told reporters after the competition.
Throughout her career Chusovitina has competed for the Soviet Union, Uzbekistan, and Germany.
Japanese Yuto Horigome won gold in the first-ever skateboarding competition — the men's street — at the Olympic Games in Tokyo on Sunday.
Horigome got 37.18 points in the final, leaving behind Brazilian Kelvin Hoefler, who won silver, and Jagger Eaton of the United States, who got the bronze medal.
The Tokyo Olympics marked the first time skateboarding was included in the sporting event's program.
The share of positive coronavirus test results at the Tokyo Olympics currently stands at 0.02 percent, spokesman of the International Olympic Committee (IOC) Mark Adams said.
On July 1-23 a total of 170,000 tests were taken, 37 of them turned out positive, which is 0.02 percent, Adams told reports on Sunday, emphasizing that there are strict coronavirus restrictions at the Games.
Dutch rowing coach Josy Verdonkschot reportedly tested positive for the coronavirus on Sunday. The coach's positive test result came after Dutch rower Finn Florijn, who had been vaccinated, tested positive on Friday, after his Olympic debut in the men's single sculls race.
The Summer Olympics in Tokyo were initially scheduled for 2020 but were postponed in the spring of last year amid the coronavirus pandemic. The Games opened on Friday and will be held until August 8.
One day after the start of the Games, at least a dozen foreign athletes in Japan have tested positive for COVID-19.