Revisiting the Tokyo Olympics as the track and field world championships open in Japan's capital

FILE – A general view of the new National Stadium is seen on Dec. 15, 2019, in Tokyo. (AP Photo/Jae C. Hong, File)FILE – A worker walks through the front entrance of the National Stadium on June 23, 2021, in Tokyo, one month before the July 23 opening of Tokyo Olympics. (AP Photo/Kiichiro Sato, File)FILE – The National Stadium, a venue for the opening and closing ceremonies for the Tokyo 2020 Olympics, is seen from an observation deck, on March 25, 2020, in Tokyo. (AP Photo/Jae C. Hong, File)FILE – IOC President Thomas Bach looks at the empty stand during a visit to the National Stadium, the main venue for the Tokyo Olympic and Paralympic Games postponed until 2021 due to the coronavirus pandemic, in Tokyo, on Nov. 17, 2020. (Behrouz Mehri/Pool Photo via AP, File)

FILE – A general view of the new National Stadium is seen on Dec. 15, 2019, in Tokyo. (AP Photo/Jae C. Hong, File)