ABERDEEN, S.D. - Northern State's softball and baseball teams have made several changes to their schedules to accomodate weather and field conditions.  The softball team's doubleheaders against Jamestown College on Tuesday and Valley City State on Thursday have been postponed and will be rescheduled for a later date.  The NSU baseball team, scheduled to host Dakota Wesleyan on Wednesday, will instead travel to play on a dry field in Mitchell, S.D.  Additionally, Tuesday's matchup at UM-Morris has been cancelled.