Argentina Open, Buenos Aires
In 1968-1988 the tournament was a part of the Grand Prix Circuit. From 1993 to 1995 the tournament was a part of World Series (now - ATP World 250 series). From 2001 to 2008 tennis tournament in Buenos Aires was a part of International Series (now - ATP World 250 series). Since 2009, the tournament has been a part of the ATP World 250 series.