similar to Mortal Kombat and Street Fighter. General regulations agreed upon were: No doping probes. No holds barred. No biting. No eye-gouging. No mandatory gloves and combative uniform (bare-knuckle contest). No judges' scores. Unlimited five-minute rounds with one-minute rest period in between. (Changed to no time limits for UFC 2 since no UFC 1 fight lasted five minutes.) Knockout, tapout, or corner stoppage (indicated by towel) are the only determination methods. Referee could only halt a match pending the corner decision. McNichols Sports Arena in Denver, at an elevation above mean sea level of approximately , had been chosen because Colorado had no athletic commission and thus no governing body from which they would need to get approval for bare-knuckle fighting. The arena had hosted only two fight cards in its history, both of minor significance, occurring earlier in 1993. The major accomplishment though for the promoters was to gather a celebrity commentary team for the event. The commentary team for the pay-per-view was Bill Wallace, Jim Brown, and Kathy Long, with additional analysis from Rod Machado and post-fight interviews by Brian Kilmeade. The ring announcer was Rich Goins. Jason DeLucia was an alternate for the event, having defeated Trent Jenkins in the alternate bout. However, as no fighter pulled out during the tournament, he was not called upon. History The tournament featured fights with no weight classes, rounds, or judges. The three rules – no biting, no eye gouging, and no groin shots – were to be enforced only by a $1,500 fine. The match only ended by submission, knockout, or the fighter's corner throwing in the towel, although the referee stopped the first fight at 26 seconds. Gloves were allowed, as Art Jimmerson showed in his quarterfinal bout against Royce Gracie, which he fought with one boxing glove. Royce Gracie won the tournament by defeating Gerard Gordeau via submission due to a rear naked choke. The referees for UFC 1 were João Alberto Barreto and Hélio Vigio, two veteran vale tudo referees from Brazil. Results UFC 1 bracket Cultural significance The event and its outcome catapulted Gracie Jiu-Jitsu (also known as Brazilian jiu-jitsu) to new heights in the United States and worldwide. Its gate and pay-per-view buys ensured that there would be more UFCs in the near future, which proved to be the case. The event sold nearly 90,000 live pay-per-view buys, in addition to drawing new audiences