Volunteers show photographers 'mask on' and 'mask off' posters before a medal ceremony indicating when the athletes can remove their face mask for 30 seconds to facilitate photography at Yumenoshima Archery Field, during the Tokyo 2020 Olympic Games in Tokyo, Japan, July 25, 2021. Picture taken July 25, 2021. REUTERS/Clodagh Kilcoyne 

Reuters photographer Kai Pfaffenbach watches a worker cleaning his hotel window while in quarantine prior to the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 12, 2021. Picture taken July 12, 2021. REUTERS/Kai Pfaffenbach 

A coffee, a bread and a banana are seen during a breakfast table at a hotel where members of the media stay ahead of the Tokyo 2020 Olympic Games in Fujisawa, Japan, July 23, 2021. REUTERS/Carlos Barria 

Reuters photographers walk back to the hotel after finishing their assignments ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 23, 2021. REUTERS/Siphiwe Sibeko 

Reuters photographer Carl Recine waits for a bus to Makuhari Messe, a venue for Olympic fencing tournament during the Tokyo 2020 Olympic Games in Tokyo, Japan, July 29, 2021. REUTERS/Maxim Shemetov 

People rush through Shibuya station two days ahead of the official opening of the Tokyo 2020 Olympic Games in Tokyo, Japan, July 21, 2021. REUTERS/Kai Pfaffenbach 

People enjoy the view from Shibuya sky observatory ahead of the official opening of the Tokyo 2020 Olympic Games in Tokyo, Japan, July 21, 2021. REUTERS/Kai Pfaffenbach 

View from the Shibuya sky observatory with the Olympic stadium ahead of the official opening of the Tokyo 2020 Olympic Games in Tokyo, Japan, July 21, 2021. REUTERS/Kai Pfaffenbach 

Tokyo 2020 Olympics - Arrival Ceremony for Tokyo 2020 Olympic Torch Relay - Shinjuku City, Tokyo, Japan - July 23, 2021 Office workers watch the Olympic Torch Relay ceremony REUTERS/Edgar Su 

Youngsters play basketball at Komazawa Olympic Park in Tokyo, Japan July 21, 2021. Picture taken July 21, 2021. REUTERS/Edgar Su 

Smokers maintain social distance as they wait for their turn to smoke at a designated outdoor area of the Main Press Center (MPC), ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 22, 2021. REUTERS/Susana Vera 

Cables for photographers and broadcasters are seen at a pitch side photo position at Tokyo Stadium, Tokyo, Japan July 21, 2021. Picture taken July 21, 2021. REUTERS/Edgar Su 

A photographer sets up a remote camera behind the goal post at Sapporo dome in Sapporo, Japan, July 24, 2021. Picture taken July 24, 2021. REUTERS/Kim Hong-Ji 

A reminder for social distancing is seen on a photo position at Makuhari Messe Hall A, the venue for the taekwondo and wrestling competitions for the Tokyo 2020 Olympic Games that were postponed to 2021 due to the coronavirus disease (COVID-19) pandemic, in Tokyo, Japan July 22, 2021. REUTERS/Murad Sezer 

Seats marked for social distancing are pictured during the Olympic Games at Ibaraki Kashima Stadium in Japan August 2, 2021. REUTERS/Edgar Su 

A cameraman is seen on empty stands at Sapporo Dome in Sapporo, Japan, July 22, 2021. Picture taken July 22, 2021. REUTERS/Kim Hong-Ji 

Volunteers check a pitch at Sapporo Dome in Sapporo, Japan, July 22, 2021. Picture taken July 22, 2021. REUTERS/Kim Hong-Ji 

A boy practises violin in the parking lot next to the stadium at Komazawa Olympic Park in Tokyo, Japan July 21, 2021. Picture taken July 21, 2021. REUTERS/Edgar Su 

A man stretches in a street near the Tokyo 2020 Olympic Games sailing venue in Enoshima Yacht Harbor, Fujisawa City, Japan, July 22, 2021. Picture taken July 22, 2021. REUTERS/Ivan Alvarado 

Ben Wei, announcer for the surfing competitions cools off at the Tsurigasaki Surfing Beach venue ahead of the Tokyo 2020 Olympic Games in Ichinomiya, Japan, July 23, 2021. REUTERS/Lisi Niesner 

A volunteer waves to journalists arriving at the Tokyo Stadium, Japan July 22, 2021. Picture taken July 22, 2021. REUTERS/Edgar Su 

The driver of a media bus is reflected in a mirror during the Tokyo 2020 Olympic Games in Tokyo, Japan, July 24, 2021. REUTERS/Brian Snyder 

A member of the military wearing personal protective equipment waits at a door of a prefab monitoring the entrance of the Yumenoshima Archery Field, ahead of the official opening of the Tokyo 2020 Olympic Games in Tokyo, Japan, July 22, 2021. REUTERS/Clodagh Kilcoyne 

A security personnel member stands guard in front of empty stands at Sapporo dome in Sapporo, Japan, July 24, 2021. Picture taken July 24, 2021. REUTERS/Kim Hong-Ji 

A cameraman rests during a break in the Tokyo 2020 Olympics weightlifting competition at Tokyo International Forum in Tokyo, Japan, July 25, 2021. Picture taken July 25, 2021.REUTERS/Edgard Garrido 

A security worker peers out from behind a fence outside Ariake Arena at the Tokyo 2020 Olympic Games in Tokyo, Japan, July 23, 2021. REUTERS/Mike Segar 

Volunteers help to comb through the blue astro turf searching for a missing piece of jewellery on the field of play at Yumenoshima Archery Field, during the Tokyo 2020 Olympic Games in Tokyo, Japan, July 26, 2021. Picture taken July 26, 2021. REUTERS/Clodagh Kilcoyne 

A member of the staff prepares and tends to the pitch in the Miyagi Stadium, during the Tokyo 2020 Olympic Games, in Sendai, Miyagi prefecture, Japan, July 26, 2021. REUTERS/Amr Abdallah Dalsh
 

A volunteer stands on a pitch at Sapporo dome in Sapporo, Japan, July 25, 2021. Picture taken on July 25, 2021. REUTERS/Kim Hong-Ji 

A Tokyo 2020 Olympics' volunteer registers her sample at a saliva samples collection point for coronavirus disease (COVID-19) PCR tests, in Miyagi Stadium, during the Tokyo 2020 Olympic Games in Sendai, the capital city of Miyagi Prefecture, Japan, July 31, 2021. REUTERS/Amr Abdallah Dalsh 

A photographer lays on the ground to rest from the heat, after the archery ranking qualifications at Yumenoshima Archery Field, during the Tokyo 2020 Olympic Games in Tokyo, Japan, July 23, 2021. REUTERS/Clodagh Kilcoyne 

An employee cleans during a break in the Tokyo 2020 Olympics Weightlifting competition at Tokyo International Forum in Tokyo, Japan, July 26, 2021. Picture taken July 26, 2021. REUTERS/Edgard Garrido 

An archery judge is sheltered with an umbrella during the games at Yumenoshima Archery Field, during the Tokyo 2020 Olympic Games, Japan, July 29, 2021. Picture taken July 29, 2021. REUTERS/Clodagh Kilcoyne 

An athlete has her photo taken on the diving board at the Tokyo Aquatics Centre, during the Tokyo 2020 Olympic Games in Tokyo, Japan, August 1, 2021. Picture taken August 1, 2021. REUTERS/Clodagh Kilcoyne 

Employees disinfect the seats during a break in the Tokyo 2020 Olympics Weightlifting competition at Tokyo International Forum in Tokyo, Japan, July 26, 2021. Picture taken July 26, 2021.REUTERS/Edgard Garrido 

Security personnel are seen at Sapporo dome, Japan, July 28, 2021. Picture taken July 28, 2021. REUTERS/Kim Hong-Ji 

A driver waits for journalists on the media bus at the MPC Media Press Center during the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 30, 2021. REUTERS/Pilar Olivares 

An Olympic rings tattoo is seen on a journalist's leg, who is traveling on the media bus during the Tokyo 2020 Olympic Games, Japan, July 30, 2021. REUTERS/Pilar Olivares 

Gloves hang to dry in the warm air before the start of a soccer match at the International Stadium Yokohama in Japan, July 28, 2021. Picture taken July 28, 2021. REUTERS/Hannah McKay 

Volunteers move a goal post at Sapporo dome, Japan, July 28, 2021. Picture taken July 28, 2021. REUTERS/Kim Hong-Ji 

Olympic medals are displayed before a ceremony at Ariake Tennis Park in Tokyo, Japan August 1, 2021. Picture taken August 1, 2021. REUTERS/Edgar Su