ATR, or Accurate Tennis Rankings, offers a comprehensive approach to ranking professional tennis players. It differs from the traditional ATP and WTA rankings, which are based primarily on tournament results from the preceding 12 months. ATR employs a proprietary algorithm that considers multiple factors including the recency of tournaments, the rankings of opponents, and the dominance of victories. This multifaceted approach aims to provide a more nuanced and current reflection of players' standings. In contrast, the current ATP/WTA ranking systems, developed in the 1970s, relied on simpler methods suitable for the era's manual data processing. Many tennis enthusiasts find that ATR rankings offer a more detailed evaluation compared to ATP/WTA rankings.
