Ratings to the left of the player's name indicate the rating before the game, the ones to the right indicate the rating after the game.
Move with the mouse over the icon on the left of each game to obtain detailed rating calculation, as explained below.
Rating changes are calculated with full precision, then rounded and added to the players' rating they had before the game.
In doubles games, Ratings are calculated with the average of the 2 players for each team. The resulting rating change is then divided by 2 for each player.
In tournaments, the terms ap refers to the player (or team) to the left of the game, and hp to the player (or team) to the right of the game.