Justin Gatlin wins the 200-meter at the U.S. Track and Field Championships in Eugene, Ore., Sunday, June 28, 2015. (AP Photo/Don Ryan) The Associated Press
Fencer Ibtihaj Muhammad poses for photos at the 2016 Team USA Media Summit Tuesday, March 8, 2016, in Beverly Hills, Calif. (AP Photo/Jae C. Hong)
LaShawn Merritt (AP photo)
United States’ Michelle Carter celebrates winning the gold medal in the women’s shot put during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Friday, Aug. 12, 2016. (AP Photo/Matt Dunham)
United States’ Simone Biles bites her gold medal for the artistic gymnastics women’s individual all-around final at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Thursday, Aug. 11, 2016. (AP Photo/Dmitri Lovetsky)
From left, silver medal Daryl Homer of the United States, gold medal Aron Szilagyi of Hungary and Kim Junghwan of South Korea show their medals on the podium of the the men’s individual sabre event at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Wednesday, Aug. 10, 2016.
Andrew Medichini / AP
Gold medal winner Brianna Rollins (center) wins the women’s 100-meter hurdles final ahead of silver medal winner Nia Ali (right) and bronze medal winner Kristi Castlin (left). Credit: AP photo –
United States’ Simone Manuel wins the gold medal setting a new olympic record in the women’s 100-meter freestyle during the swimming competitions at the 2016 Summer Olympics, Thursday, Aug. 11, 2016, in Rio de Janeiro, Brazil. (AP Photo/Natacha Pisarenko)
United States’ Justin Gatlin after competing in the the men’s 100m final at theWorld Athletics Championships at the Bird’s Nest stadium in Beijing, Sunday, Aug. 23, 2015. Gatlin won the silver medal. (AP Photo/Kin Cheung) THE ASSOCIATED PRESS
United States’ Simone Biles performs on the balance beam during the artistic gymnastics women’s individual all-around final at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Thursday, Aug. 11, 2016. (AP Photo/Rebecca Blackwell)
Gabby Douglas congratulates her teammate Aly Raisman after Raisman’s balance beam routine in the team competition at the 2016 Rio Games. CREDIT: JULIO CORTEZ, AP
United States’ Michelle Carter competes in the final of the women’s shot put during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Friday, Aug. 12, 2016. (AP Photo/Matt Dunham)
United States’ Simone Manuel shows off her gold medal during the medal ceremony for the women’s 100-meter freestyle final during the swimming competitions at the 2016 Summer Olympics, Friday, Aug. 12, 2016, in Rio de Janeiro, Brazil. (AP Photo/Michael Sohn)
United States’ Jeff Henderson competes in the men’s long jump final during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Saturday, Aug. 13, 2016. (AP Photo/Matt Dunham)AP
United States’ Simone Biles trains on the floor exercise ahead of the 2016 Summer Olympics in Rio de Janeiro, Brazil, Thursday, Aug. 4, 2016. (AP Photo/Rebecca Blackwell)
Gold medal winner Brianna Rollins wins the women’s 100-meter hurdles final ahead of silver medal winner Nia Ali (right) and bronze medal winner Kristi Castlin. Credit: AP photo – See more.
United States’ Michelle Carter celebrates winning the gold medal in the women’s shot put during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Saturday, Aug. 13, 2016. (AP Photo/Kirsty Wigglesworth)
The United States’ Christian Taylor makes an attempt in the men’s triple jump prelims at the Olympic stadium in Rio de Janeiro on Monday. Matt Dunham Associated Press
United States center Brittney Griner shoots while defended by Canada forward Miranda Ayim during the first half of a women’s basketball game at the Youth Center at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Friday, Aug. 12, 2016. (AP Photo/Carlos Osorio)
Tori Bowie, left, edges out Allyson Felix in thier heat during the semifinals of the women’s 200-meter run at the U.S. Olympic Track and Field Trials, Saturday, July 9, 2016, in Eugene Ore. (AP Photo/Marcio Jose Sanchez)
United States’ Jeff Henderson celebrates winning the gold medal in the men’s long jump during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Saturday, Aug. 13, 2016. (AP Photo/Natacha Pisarenko)
United States’ DeMar DeRozan (9) tries to steal the ball from China’s Li Gen, right, during a basketball game at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Saturday, Aug. 6, 2016.
United States’ Nia Ali wins her heat in a 100 meter hurdles semifinal during the athletics competitions of the 2016 Summer Olympics at the Olympic Stadium in Rio de Janeiro, Brazil, Wednesday, Aug. 17, 2016. (AP Photo/ Morry Gash)
United States’ Ashton Eaton celebrates winning the gold medal in the men’s decathlon during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Aug. 18, 2016. (Julio Cortez/ AP)
United States’ Kerron Clement competes in heats of the men’s 400-meter hurdles. (Natacha Pisarenko, Associated Press)
