Melissa Jefferson-Wooden and Gabby Thomas faced off once again on the Grand Slam circuit, where Jefferson-Wooden staved off a surging Thomas down the stretch for the 200m win in Philadelphia. #NBCSports #GrandSlamTrack #MelissaJeffersonWooden #GabbyThomas » Subscribe to NBC Sports: youtube.com/nbcsports?sub_confirmation=1 » Watch Live Sports on Peacock: peacocktv.smart.link/v82e9dl56 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, Big Ten, NASCAR, PGA TOUR, the Kentucky Derby, Tour de France and many more. Subscribe to our channel for the latest sporting news and highlights! NBC Olympics is responsible for producing, programming and promoting NBCUniversal's Olympic coverage. It is renowned for its unsurpassed Olympic...