A Libero is a noun and in the sports field is directed to soccer and to volleyball. In soccer the word refers to a player called "The Sweeper" who protects the goal keeper. In Volleyball the word refers to the player who plays in the back row.
There is not always a libero. It is the coaches decision to have or not to have a libero, just like it is his or her choice to field any other position on the team.
Libero De Libero was born on September 10, 1906, in Fondi, Lazio, Italy.
Libero De Libero died on July 4, 1981, in Rome, Lazio, Italy.
There is no apostrophe in "Sports Field"
Libero Libero
Libero Luxardo was born in 1908.
Libero Luxardo died in 1980.
Libero Grande happened in 1997.
Libero Grande was created in 1997.
Libero Grassi was born in 1924.
Libero Marchini was born in 1914.
Libero Marchini died in 2003.