Ronda Rousey needed just 16 seconds to beat Alexis Davis...

Ronda Rousey needed just 16 seconds to beat Alexis Davis by technical knockout and defend her women's bantamweight title at UFC 175 at Mandalay Bay in Las Vegas on July 5, 2014. Credit: Mario Gonzalez

Ronda Rousey finally found a way to outdo herself. And it took her only an Instagram-friendly 16 seconds to accomplish the task Saturday night at UFC 175.

Rousey, the undefeated women's bantamweight champion, threw Alexis Davis to the ground and punched her in the face nine times before the referee stopped the fight.

"If I stopped being motivated, then these fights would probably go on longer," said Rousey, whose 16 seconds of work is the second- fastest knockout in UFC title fight history, one shy of Andrei Arlovski's knockout of Paul Buentello in 2005.

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