The outcome of a sports event being postponed depends on the league and the sports. For example, in the National Football League (NFL) contests, you will be awarded some points for all the postponed games that were played on Wednesday and earlier. As for Major League Baseball (MLB) contests, you will be awarded points only for a game rescheduled for another time on the same day.
The fantasy sports website will cancel the contest and refund your money if all but one of the games in the contests are canceled or postponed.