Calcio Fiorentino is the most savage sport in the world. It essentially combines street fighting and rugby, and is played with such savagery that knockouts and broken bones are commonplace. Dating back to Renaissance era Florence, the rules of Calcio Fiorentino are as follows: Matches last 50 minutes and are played on a field covered in sand measuring 100 × 50 meters divided by a white line, with a goal net running the width of each end. Each team has 27 players and no substitutions are allowed