Tareg Hamedi of Saudi Arabia, right, reacts as medical personnel attend to Sajad Ganjzadeh of Iran after he was injured in their men's kumite +75kg gold medal bout for karate at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Tokyo, Japan. (AP Photo/Vincent Thian)

Sajad Ganjzadeh of Iran is injured while competing against Tareg Hamedi of Saudi Arabia in their men's kumite +75kg gold medal bout for karate at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Tokyo, Japan. (AP Photo/Vincent Thian)

Medical personnel attend to Sajad Ganjzadeh of Iran after he was injured while competing against Tareg Hamedi of Saudi Arabia in their men's kumite +75kg gold medal bout for karate at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Tokyo, Japan. (AP Photo/Vincent Thian)

Medical personnel take Sajad Ganjzadeh of Iran away after he was injured while competing against Tareg Hamedi of Saudi Arabia in their men's kumite +75kg gold medal bout for karate at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Tokyo, Japan. (AP Photo/Vincent Thian)

Sajad Ganjzadeh of Iran, left, is injured while competing against Tareg Hamedi of Saudi Arabia in their men's kumite +75kg gold medal bout for karate at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Tokyo, Japan. (AP Photo/Vincent Thian)

Tareg Hamedi of Saudi Arabia reacts after losing following an injury to Sajad Ganjzadeh of Iran in their men's kumite +75kg gold medal bout for karate at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Tokyo, Japan. (AP Photo/Vincent Thian)

An official signals to Tareg Hamedi of Saudi Arabia, right, after Sajad Ganjzadeh of Iran was injured in their men's kumite +75kg gold medal bout for karate at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Tokyo, Japan. (AP Photo/Vincent Thian)