Seventeen Marlins players and two coaches have reportedly become infected, though one of the coaches has since tested negative.
Major League Baseball rejigged its schedule as a result of the outbreak. The Marlins won't play until at least Monday, while four other teams were also impacted.
The source of the outbreak is still unknown, but the league is reportedly investigating while it introduces new rules to prevent the spread of the virus within teams. According to a memo, clubs are now required to travel with a COVID-19 protocol compliance officer and must wear surgical masks while traveling. Players on the road will also be encouraged to remain at their hotels before and after games.