UNDATED (AP) – Coronavirus concerns are affecting the Major League Baseball schedule on opening day. Thursday night’s game between the Nationals and Mets has been postponed after one of Washington’s players tested positive for COVID-19. The Nationals issued a statement saying “ongoing contact tracing involving members of the Nationals organization” was the reason for scrapping the game at their stadium. Washington general manager Mike Rizzo said Wednesday that one of his team’s players had tested positive for COVID-19 on Monday, before the team left spring training camp. Rizzo said four other players and one staff member were following quarantine protocols after contract tracing determined they were in close contact with the person who tested positive. Rizzo did not identify any of those involved. The contest was not immediately rescheduled, even though Friday already had been set up as an off day that could accommodate a game pushed back from Thursday if necessary. The Nationals said the game “will not be made up on Friday.”