The Tour de France stepped up protective measures on Sunday, to "limit health risks" in the face of a resurgence of Covid-19 which has affected several riders, including UAE Team Emirates' Juan Ayuso, in recent days.
Masks must now be worn by everyone, including organisers, guests and journalists, who may be "in contact with the riders and members of the cycling teams" before and after the stages, said organisers Amaury Sport Organisation (ASO).
Several riders, including Britain's Tom Pidcock and Spain's Juan Ayuso, UAE Team Emirates' team-mate of yellow jersey Tadej Pogacar, have already retired after testing positive.
Pogacar said before the start of the race that he had been affected by the virus in mid-June while 2018 winner Geraint Thomas is continuing the Tour for the time being despite "slight symptoms".
Several riders such as Remco Evenepoel, who is third overall, have already started wearing masks again over the last few days with the Belgian explaining he was doing so because the journalists in front of him were not wearing them.
Carlos Alcaraz will miss the Madrid Open for the second consecutive year after withdrawing on Friday with a wrist injury, dealing another blow to the world number two's clay court preparations ahead of his French Open title defence.
Novak Djokovic is still working through the injury problems that forced him to miss recent tournaments in Miami and Monte Carlo and said on Friday that he will not feature at next week's Madrid Open, one of the last stops before the French Open.
Mumbai Indians head coach Mahela Jayawardene has defended Jasprit Bumrah after the struggling pace spearhead went a fifth Indian Premier League match without a wicket in Thursday's seven-wicket defeat by Punjab Kings.
Iranian women's football players Fatemeh Pasandideh and Atefeh Ramezanisadeh thanked the Australian government on Friday for offering a "safe haven" and said they wished to resume their sporting careers after rebuilding their lives.
Ollie Watkins still has hope of making England's World Cup squad despite being dropped for last month's friendlies against Uruguay and Japan, with the Aston Villa forward saying all he can do in the last few weeks of the season is score goals.
Dubai Police, in collaboration with the UAE Ministry of Interior, have arrested an Irish fugitive accused of involvement in an organised criminal group linked to international crimes in his home country.
UAE President His Highness Sheikh Mohamed bin Zayed Al Nahyan has met with His Highness Sheikh Hamad bin Mohammed Al Sharqi, Supreme Council Member and Ruler of Fujairah, to discuss national priorities and the country’s continued development.