Gold medalist Sydney McLaughlin, of the United States, celebrates after winning the women's 400-meter hurdles at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo, Japan. (AP Photo/Petr David Josek)

Sydney McLaughlin, of the United States, wins the women's 400-meter hurdles final at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo, Japan. (AP Photo/Petr David Josek)

Sydney McLaughlin, of United States celebrates after winning the gold medal in the final of the the women's 400-meter hurdles at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo, Japan. (AP Photo/Martin Meissner)

Sydney McLaughlin, of the United States, wins the women's 400-meter hurdles final at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo, Japan. (AP Photo/Petr David Josek)

Gold medalist Sydney McLaughlin, of the United States, poses during the medal ceremony for the women's 400-meter hurdles at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo. (AP Photo/Francisco Seco)

Sydney McLaughlin, of the United States, wins the women's 400-meter hurdles final at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo, Japan. (AP Photo/Petr David Josek)

Silver medalist Dalilah Muhammad, of the United States, poses during the medal ceremony for the women's 400-meter hurdles at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo. (AP Photo/Francisco Seco)

Sydney McLaughlin, of the United States, wins the women's 400-meter hurdles final at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo, Japan. (AP Photo/Petr David Josek)

Sydney McLaughlin, bottom, of the United States, and teammate Dalilah Muhammad look at the scoreboard after the final of the women's 400-meter hurdles at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo. (AP Photo/Matthias Schrader)

Sydney Mclaughlin, of United States wins the gold medal in the final of the the women's 400-meter hurdles ahead of Dalilah Muhammad, of United States, silver, and Femke Bol, of Netherlands, bronze, at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo, Japan. (AP Photo/Charlie Riedel)

Viktoriya Tkachuk, of Ukraine, lies on the track after the final of the women's 400-meter hurdles at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo. (AP Photo/Matthias Schrader)

Bronze medalist Femke Bol, of the Netherlands, celebrates after the women's 400-meter hurdles at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo, Japan. (AP Photo/Petr David Josek)

Gold medalist Sydney McLaughlin, of the United States, celebrates after winning the women's 400-meter hurdles at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo, Japan. (AP Photo/Petr David Josek)

Sydney McLaughlin of the United States, left, celebrates with teammate Dalilah Muhammad after winning the final of the women's 400-meter hurdles at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo. (AP Photo/Matthias Schrader)