Complex sentence: Jason Nicholas Miller (born December 24,1980) best known as Mayhem Miller is a television personality and a American mixed martial arts middleweight fighter who has fought in the UFC, Strikeforce, WFA, WEC, and DREAM.
Split into simpler sentences: Jason Nicholas Miller (born December 24,1980) best known as Mayhem Miller is a Presenter and a American mixed martial arts middleweight fighter. He has fought in the UFC, Strikeforce, WFA, WEC, and DREAM.