Yes, I recall that the Orioles played a home game that was closed to the public, during the Freddie Gray riots. If I recall correctly, one or two games had been postponed, then it was decided to play an afternoon game, but closed to the public, so that the Orioles would have one less game to try to reschedule later in the season.
Could you imagine that? How does a city ever recover from BOTH of those events?