Toronto FC's Terrence Boyd, left, and Vancouver Whitecaps' Scott Sutter vie for the ball during the second half of an MLS soccer game in Vancouver on May 31, 2019. COVID-19 impacted the MLS is Back Tournament again Sunday, with a pair of test results on the eve of kickoff prompting Toronto FC's opening match against D.C. United to be called off. MLS deputy commissioner Mark Abbott made the announcement just minutes before the scheduled 9 a.m. ET start at ESPN's Wide World of Sports complex in the Orlando area THE CANADIAN PRESS/Darryl Dyck