UFCs All-Time Top 10: #8, Ronda Rousey ushers in women's era at

As UFC celebrates its 20th Anniversary, we look back at the 10 best UFC events of all time. At No. 8, UFC 157 on Feb. 23, 2013, which took place in Anaheim, Calif., featuring the historic Octagon debut of Ronda Rousey and women's MMA.

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