ATP Tennis1972

Since 1990, the association has organized the principal worldwide tennis tour for men, the ATP Tour, which was renamed in January 2009 and is now known as the ATP World Tour. It is an evolution of the tour competitions previously known as World Championship Tennis.
Started in 1972 by several players, it was first managed by Jack Kramer and Cliff Drysdale. The organisation was integral in creating professional players' rankings which started the following year and continues to this day. From 1974 to 1989, the men's circuit was administered by a sub-committee called the Men's Tennis Council. It was made up of representatives of the International Tennis Federation (ITF), the ATP, and tournament directors from around the world.