Wednesday's Opening Day game between the Washington Nationals and New York Mets was postponed just hours before the scheduled first pitch because of coronavirus concerns after at least three Washington players tested positive for COVID-19.

Mike Rizzo told reporters that his team also has a fourth player considered a "likely positive." He did not identify any of the players involved.

"For the most part, the whole team has been -- we put them -- in lockdown and they're self-quarantining," Rizzo said.

The next game scheduled between the two teams is Saturday at 4:05 p.m. ET.