Athing Mu, the middle-distance runner and defending 800-meter Olympic champion, did not make the U.S. track and field roster for the Paris Games, missing out on the relay pool due to a torn hamstring. Notable athletes like Noah Lyles, Sha’Carri Richardson, and Gabby Thomas are part of the U.S. squad, which also includes Olympic champions like Ryan Crouser and Sydney McLaughlin-Levrone. Mu's absence follows a fall during the U.S. Olympic trials, where she finished last, despite her previous success in the 4x400 relay at the Tokyo Olympics. Richardson, the 100-meter world champion, is set for her Olympic debut in Paris, aiming to be a top sprinter. Additionally, younger talents like Quincy Wilson and seasoned sprinters like Kenny Bednarek are part of the relay pool and sprint competitions, respectively.