International Series tennis tournaments

The ATP World Tour 250 series (previously known as the ATP World Series and ATP International Series) is the fifth-highest tier of men's tennis tournament after the four Grand Slam tournaments, ATP World Tour Finals, ATP World Tour Masters 1000, and ATP World Tour 500.

The series includes 40 tournaments, with 250 rankings points awarded to each singles champion—which accounts for the name of the series. Draws consist of 28, 32, or 48 for singles and 16 for doubles.

(i) refer to indoor stadiums

ATP World Series
1990–1999

ATP International Series
2000–2008

ATP World Tour 250
2009–present

Singles

Doubles

^ Active players in bold.

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