Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Denis Halilovi (born 2 March 1986 in Slovenj Gradec, SR Slovenia, SFR Yugoslavia) is a Slovenian footballer of Bosnian descent. He currently plays as a centre back for CSKA Sofia in the Bulgarian A PFG. Association football, more commonly known as football or soccer, is a sport played between two teams of eleven players with a spherical ball. At the turn of the 21st century, the game was played by over 250 million players in over 200 countries, making it the world's most popular sport.