Melissa Jefferson-Wooden posted a personal best and set the world lead in a blistering-fast 10.73-second 100m dash that earned her a sweep over a stacked short sprints field including Gabby Thomas and Tamari Davis at Grand Slam Philadelphia. #NBCSports #GrandSlamTrack #MelissaJeffersonWooden #shorts » Subscribe to NBC Sports: youtube.com/nbcsports » Watch Live Sports on NBCSports.com: nbcsports.com/live NBC Sports Group serves sports fans 24/7 with premier live events, insightful studio shows, and compelling original programming. NBC Sports is an established leader in the sports media landscape with an unparalleled collection of sports properties that include the Olympics, NFL, Premier League, NASCAR, PGA TOUR, the Kentucky Derby, Tour de France, French Open, IndyCar and many more. Subscribe to our channel for the latest sporting news and highlights! Visit NBC Sports: nbcsports.com Find Premier League on NBC Sports: nbcsports.com/socc...