docs: def _get_batting_order_starting_flg(cls, batter):
          """
          get batting order and starting member flg
          :param batter: Beautifulsoup object(batter element)
          :return: batting order(1-9), starting member flg(True or False)
          """
          bo = batter.get('bo', None)
          if not bo or len(bo) != 3:
              return False, False
          batting_order = bo[:1]
          starting = True if bo[1:3] == '00' else False
          return batting_order, starting