Ronda Rousey does it again. Six fights in the Octagon and each one of them has ended in the first round by submission. Last night, Rousey faced off against Sarah Kaufman, who had only one loss prior to yesterday's bout. Right after the bell rung, Ronda attempted to bring down Kaufman to plant her go-to move, the armbar. 

A mere 54 seconds later, Kaufman tapped out and Rousey improved her record to 6-0. Is a fight between Cyborg Santos and Ronda in the future? We sure hope so. 

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[via The Big Lead]