Monday night's game between the Chicago White Sox and Baltimore Orioles was postponed because of safety concerns after riots broke out near Camden Yards.
Rob Manfred, at the stadium for a previously planned visit, said Tuesday night's game between the Orioles and White Sox could be moved if safety continued to be an issue.
Rioters looted stores and threw rocks and bricks at Baltimore police about three miles from the stadium in the wake of the mysterious death of Freddie Gray. He died April 19 after suffering a severe spinal injury in police custody.
The Orioles announced the postponement about 40 minutes before game time. About 1,000 fans were inside the stadium at the time, and many gates already had been closed.