The UFC had a reputation, especially in the early days, as an extremely violent event, as evidenced by a disclaimer in the beginning of the UFC 5 broadcast which warned audiences of the violent nature of the sport.
UFC 5 also introduced the first singles match, a rematch from the inaugural UFC featuring three-time champion Royce Gracie and Ken Shamrock, called "The Superfight". This proved an important development, because singles matches would feature fighters who suffered no prior damage from a previous fight in the same event, unlike tournament matches. Singles matches would become a staple in the UFC for years to come.
"The Superfight" began as a non-tournament match that would determine the first reigning UFC Champion for tournament winners.