Minnesota Wild goalie Niklas Backstrom underwent successful sports hernia surgery Thursday in Philadelphia and is expected to be ready for the 2013-14 season, Wild general manager Chuck Fletcher announced. Backstrom, however, will be a free agent. He was injured during pregame warmups for Game 1 of the opening-round playoff series against the Chicago Blackhawks. He did not play in the best-of-seven series, which Minnesota lost in five games