Gallery
Royce Gracie wins UFC 1, an 8 man tournament style matchup.
Holly Holm knocks out the undefeated Ronda Rousey, who is considered the most dominate female athlete of all time.
The four biggest MMA draws of all time (left to right): Brock Lesnar, Georges St. Pierre, Conor McGreggor, and (middle right) Ronda Rousey.
Ronda Rousey
Holly Holm