The Marlins left Philadelphia, where they were stranded in isolation for a week after their season-opening series because of a coronavirus outbreak that sidelined half of the team.
With the affected players already back in Miami, the healthy Marlins traveled to Baltimore, where they are scheduled to resume play Tuesday.
For the second day in a row, the Marlins had no new positive tests among players and staff, according to a person familiar with the situation. The person spoke on condition of anonymity because the results had not been publicly released.
The Philadelphia Phillies also received results and had no new positives.