The ATP Tour is the principal professional tennis circuit for male players, organized by the Association of Tennis Professionals. It features a series of tournaments held worldwide, including the prestigious Grand Slam events, where players compete for ranking points and prize money. Established in 1972, the ATP Tour includes various levels of competitions, such as ATP Masters 1000, ATP 500, and ATP 250 events. The tour culminates in the ATP Finals, where the top-ranked players compete for the season-ending championship. The ATP Tour plays a crucial role in promoting men's tennis globally.