Melissa Jefferson-Wooden dominates opening heat to clinch 100m semifinal spot at Worlds | NBC Sports

American 100m national champion Melissa Jefferson-Wooden began her march towards a potential World Title by easily winning the opening heat of the women's 100m competition in Tokyo #NBCSports #MelissaJeffersonWooden #trackandfield » Subscribe to NBC Sports: https://www.youtube.com/nbcsports?sub_confirmation=1 » Watch Live Sports on Peacock: https://peacocktv.smart.link/v82e9dl56 NBC Sports Group serves sports fans 24...