Monday’s Chicago White Sox game against the Washington Nationals was postponed because of rain. It will be made up Tuesday as part of a straight doubleheader beginning at 3:40 p.m. at Guaranteed Rate Field. The second game will begin about 30 to 45 minutes after the opener ends. Parking lots and gates will open at 2:40 p.m. Chris Flexen will start Game 1 for the Sox against the Nationals’ ...