The ATP Tour is the men's professional tennis circuit, not a single tournament or one continuous television channel. Its ATP 250, ATP 500 and Masters 1000 events form different levels within a calendar that moves between hard courts, clay and grass. Those categories help explain a tournament's place in the season, while the draw explains the immediate route to its title. Singles and doubles are separate competitions, and a player can have a different partner or schedule in doubles. The four Grand Slams have their own organizers and should not simply be relabeled ATP events. For viewers following one player, the practical starting point is the current tournament and court schedule rather than a general tour logo.
How the viewing session is organised
A circuit of separately organized events and categories, with surfaces and singles/doubles schedules changing across the season.
Useful answers
What do ATP 250, 500 and Masters 1000 labels describe?
They identify tournament categories within the ATP Tour. They are not channel numbers or the number of players in a draw.
Is every men’s professional tennis match part of the same tournament?
No. The circuit contains many events, while Grand Slams and other competitions have their own identities and arrangements.