SportsPulse: With an increasing number of athletes being affected by the coronavirus, USA TODAY Sports' Nancy Armour breaks down why the 2020 Olympics could be postponed. » Subscribe to USA TODAY Sports: https://bit.ly/2L0ktE1 » USA TODAY delivers current local and national news, sports, entertainment,  finance, technology, and more through award-winning journalism, photos, videos and VR. #coronavirus #Olympics #Tokyo