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YESTERDAY, during the women’s gymnastics team final at the Olympic Games in Tokyo, Simone Biles, of the USA, lost her bearings while performing a vault, and stumbled as she landed. Soon after, she left the venue, accompanied by a medical official; when she returned, it was only to watch her teammates. All this happened early in the morning, US time.

The Tokyo Olympics officially kicked off in a virtually empty stadium Friday night after a yearlong delay due to the pandemic.

As the Games face the ongoing threat of Covid-19, with the Japanese capital under a state of emergency and many of the country's residents adamantly opposed to hosting the Olympics at all, viewers were still treated to the night's festivities that marked the beginning of the world sporting event.

Follow NBC News' Olympics coverage throughout the Games

“Naomi Osaka withdrew from the French Open on Monday and wrote on Twitter that she would be taking a break from competition… The stunning move came a day after Osaka, a 23-year-old who was born in Japan and moved with her family to the U.S. at age 3, was fined $15,000 for skipping the postmatch news conference after her first-round victory at the French Open.