US BMX rider Fields released from Tokyo hospital after crash
Medics prepare to carry away on a stretcher Connor Fields of the United States after he crashed at the first bend in the men's BMX Racing semifinals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Medics prepare to carry away on a stretcher Connor Fields of the United States after he crashed at the first bend in the men's BMX Racing semifinals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Jul. 30, 2021 02:40 AM EDT
Medics prepare to carry away on a stretcher Connor Fields of the United States after he crashed at the first bend in the men's BMX Racing semifinals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Medics prepare to carry away on a stretcher Connor Fields of the United States after he crashed at the first bend in the men's BMX Racing semifinals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Jul. 30, 2021 02:36 AM EDT
Connor Fields of the United States, center, who later crashed, is followed by Romain Mahieu of France, center-left, and Vincent Pelluard of Colombia, left, as they compete in the men's BMX Racing semifinals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Connor Fields of the United States, center, who later crashed, is followed by Romain Mahieu of France, center-left, and Vincent Pelluard of Colombia, left, as they compete in the men's BMX Racing semifinals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Jul. 30, 2021 03:09 AM EDT
Medics carry away on a stretcher Connor Fields of the United States after he crashed at the first bend in the men's BMX Racing semifinals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Medics carry away on a stretcher Connor Fields of the United States after he crashed at the first bend in the men's BMX Racing semifinals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Jul. 30, 2021 02:37 AM EDT