def load_from_id(gid)
      @gid = gid
      @rosters = []
      @umpires = {}
      @xml_data = GamedayFetcher.fetch_players(gid)
      @xml_doc = REXML::Document.new(@xml_data)
      if @xml_doc.root
        self.set_rosters
        self.set_umpires
      end
    end
def load_from_id(gid)
      @gid = gid
      @rosters = []
      @umpires = {}
      @xml_data = GamedayFetcher.fetch_players(gid)
      @xml_doc = REXML::Document.new(@xml_data)
      if @xml_doc.root
        self.set_rosters
        self.set_umpires
      end
    end
Loads the players XML from the MLB gameday server and parses it using REXML