They will later be auctioned off , with proceeds going to the Negro Leagues Baseball Museum .
On the field , the Royals ( Kansas City Monarchs ) and Orioles ( Baltimore Black Sox ) will wear throw - back uniforms .
Kansas City Monarchs will later be auctioned off , with proceeds going to the Negro Leagues Baseball Museum .
On the field , the Royals ( Kansas City Monarchs ) and Orioles ( Baltimore Black Sox ) will wear throw - back uniforms .