Introduction The current linear rating system has been used since the beginning of the PSA rankings. Since then, Pakistan’s Scrabble community has grown considerably. As more players compete, a zero-sum system, where every rating point gained must be taken from another player, becomes increasingly restrictive because the population is competing for a limited pool of points. Key Differences The WESPA RJR rating system is non-zero-sum, meaning that one player’s rating gain does not have to equal the opponent’s rating loss. Rating differences represent expected winning chances: a 100-point advantage corresponds to approximately a 60%–40% expectation, while a 200-point advantage corresponds to...