On all backgammon sites with ratings, the length of the match affects the number of points awarded for wins and losses. On the one hand, a longer match between two players of equal strength is worth more points than a shorter match between the same two players. On the other hand, a longer match between players of unequal strength may be worth more points if the weaker player wins, but fewer points if the stronger player wins. This is because the stronger player's chances of winning increase as the match length increases.