Welcome to ratingtennis.com. Our purpose is to provide free predictive tennis analysis by quantifying players' ability on each court surface expressed as a rating score out of 100. Our ratings are designed to be the truest reflection of a player's relative skill. Each player's rating captures all prior match result history adjusting for the strength of the opponent faced. These ratings allow us to also assign an accurate win probability to upcoming matches. See an explanation of the model here.