Caster Semenya runs free at Prefontaine Classic

South Africa’s Caster Semenya, left, runs next to United States’ Chrishuna Williams during the women’s 800-meter race during the Prefontaine Classic, an IAAF Diamond League athletics meeting, in Stanford, Calif., Sunday, June 30, 2019. Semenya won the race. (AP Photo/Jeff Chiu)
United States’ Michael Norman, foreground, crosses the finish line to win the men’s 400-meter race during the Prefontaine Classic, an IAAF Diamond League athletics meeting, in Stanford, Calif