It all depends on the K-factor of the player. USCF uses a sliding K depending on the strength of the player, ranging from over 60 for a 1200 to 16 for a 2500. What K means is the maximum number of points that a player can gain or lose from one game. If a 2000 USCF player lost to a 1500 USCF player, the 2000 player has a K of 27 and would lose 26 points as he or she is rated 500 points below the opposition and deserves to lose almost the highest amount of points possible for their k-factor. The 1500 has a K-factor of 45 and is the reverse of the 2000, so he gains just below the max for his k-factor - 44 points. I know that Glicko slides differently and your k-factor is based largely on how many games you play instead of your rating, but the k-factor still remains as the determining factor for rating gain or loss in all systems. For a 2000 and a 1500 on chess.com it depends on how many games they've played.
rating change formula
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Hello
Is there a formula that calculates rating point wins and gains i.e. if a 2000 loses to a 1500 how many points do they lose and how many points does the 1500 gain?
Sorry if this has already been covered but I read the post on chess ratings and couldn't find anything to do this calculation. Please direct me to the right post.
Thanks