def update_obj
      mean, sd = rating.to_glicko_rating
      @obj.rating = mean
      @obj.rating_deviation = sd
      @obj.volatility = volatility
    end
def update_obj
      mean, sd = rating.to_glicko_rating
      @obj.rating = mean
      @obj.rating_deviation = sd
      @obj.volatility = volatility
    end
Update seed object with this player's values