Città di Caltanissetta
The ATP Challenger Caltanissetta (official name: " Città di Caltanissetta ") is a held annually since 1999 tennis tournament in Caltanissetta, Italy. It is part of the ATP Challenger Tour and is played on outdoor clay courts. From 1999 to 2008, the tournament was part of the ITF Futures Tour, in 2009 it became a Challenger tournament.