def get_starters_unique(year)
      pitchers = get_start_pitcher_appearances_by_year(year)
      h = {}
      pitchers.each {|pitcher| h[pitcher.pitcher_name]=pitcher}
      h.values
    end
def get_starters_unique(year)
      pitchers = get_start_pitcher_appearances_by_year(year)
      h = {}
      pitchers.each {|pitcher| h[pitcher.pitcher_name]=pitcher}
      h.values
    end
Returns an array of all pitchers who have started at least one game during the specified season