- 3.1 Individual
- 3.2 double
Casoni, which began with the sport of tennis at the age of eight years, played best on clay or hard courts. In 1996 she secured to the side of Alice Canepa the double title of the French Open in the Junior Women.
During her career Casoni won three WTA titles in doubles. They also came up with four singles and 27 doubles titles on ITF tournaments. For the Italian Fed Cup team they played eleven games, of which they won eight.
Their last match as a professional player they played in September 2006 at the ITF tournament in the domestic Mestre.