WASHINGTON - The long awaited start to the Washington Nationals 2021 season will be postponed due to COVID-19 related issues, sources say.Download the FOX 5 DC News App for Local Breaking News and WeatherAccording to ESPN’s Buster Olney Thursday’s game against the Mets was called off Thursday morning.On Wednesday, general manager Mike Rizzo said a player for the Nationals tested positive for COVID-19, and four teammates and a staff member have been quarantined.NATIONALS ANNOUNCE POSITIVE COVID-19 CASE ON EVE OF OPENING DAYThe team said they were going to honor fans and the 2019 World Series Championship team and re-raise the World Series Champions flag instead of the traditional opening day ceremonial pitch.Advertisement.