MINNEAPOLIS (AP) The Minnesota Twins have postponed their series opener against the Baltimore Orioles because of bad weather.

Rain fell throughout Monday afternoon, preventing both teams from taking batting practice. Though the tarp remained on the infield, the national anthem was sung and the ceremonial first pitch was thrown out. The skies had been dry for about an hour when the Twins made the announcement to call off the game. Radar showed heavy precipitation approaching.

The makeup date was set for July 28.

The Orioles and Twins are scheduled to play again Tuesday night and Wednesday afternoon, but the forecast is calling for more rain, making a doubleheader a tenuous bet.

This was already the fourth postponement of the season for the Orioles.