Olympic Stadium opens in Tokyo for start of track and field

Lilly King of the United States swims in a heat in the women's 200-meter breaststroke at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo, Japan. (AP Photo/Martin Meissner)

Ryan Murphy of the United States starts in a heat of the men's 200-meter backstroke at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo, Japan. (AP Photo/Martin Meissner)

April Ross, right of the United States, and teammate Alix Klimeman react after winning a women's beach volleyball match against Spain at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo, Japan. (AP Photo/Petros Giannakouris)

Jade Carey, of the United States, performs on the balance beam during the women's artistic gymnastic qualifications at the 2020 Summer Olympics, Sunday, July 25, 2021, in Tokyo. (AP Photo/Gregory Bull)