UFC 184: Ronda Rousey vs. Cat Zingano

Ronda Rousey, left, celebrates as Cat Zingano kneels on the mat after their UFC 184 bout Saturday at Staples Center.  (Mark J. Terrill / Associated Press)

Cat Zingano reacts to her loss to Ronda Rousey by submission during UFC 184 at Staples Center on Saturday night.  (Harry How / Getty Images)

Ronda Rousey celebrates her victory over Cat Zingano at UFC 184 on Feb. 28.  (Harry How / Getty Images)

UFC President Dana White congratulates Ronda Rousey on her UFC 184 victory over Cat Zingano on Saturday night at Staples Center.  (Harry How / Getty Images)

Ronda Rousey, right, works toward a quick submission of Cat Zingano during their UFC 184 bout Saturday at Staples Center.  (Mark J. Terrill / Associated Press)

Ronda Rousey, right, needed just 14 seconds to beat Cat Zingano during UFC 184 at Staples Center on Saturday night.  (Mark J. Terrill / Associated Press)

Ronda Rousey, top, quickly turned the tables after a quick charge by Cat Zingano on Saturday night.  (Mark J. Terrill / Associated Press)

Ronda Rousey made quick work of Cat Zingano during their UFC 184 bout Saturday at Staples Center.  (Harry How / Getty Images)

Ronda Rousey remained undefeated after UFC 184 on Saturday night; her opponent, Cat Zingano, did not.  (Harry How / Getty Images)

Ronda Rousey takes a sudden rush by Cat Zingano in stride during their UFC 184 bout Saturday at Staples Center.  (Harry How / Getty Images)

Ronda Rousey needed only 14 seconds to dismiss her latest challenger, Cat Zingano.  (Mark J. Terrill / Associated Press)

Ronda Rousey enters the arena Saturday at Staples Center.  (Harry How / Getty Images)

Ronda Rousey enters the octagon Saturday to take on Cat Zingano during UFC 184 at Staples Center.  (Harry How / Getty Images)

Holly Holm, left, and Raquel Pennington exchange punches during their UFC 184 bantamweight bout Feb. 28 at Staples Center.

Holly Holm lands a kick on her way to a split-decision victory over Raquel Pennington during UFC 184 Saturday at Staples Center.  (Harry How / Getty Images)

Holly Holm, left, came out on top after a close match against Raquel Pennington during UFC 184 at Staples Center.  (Harry How / Getty Images)

Holly Holm takes a punch in the face on her way to a split-decision victory over Raquel Pennington on Saturday at Staples Center.  (Harry How / Getty Images)

Josh Koscheck, right, taps out as Jake Ellenberger has him in a chokehold during a UFC 184 welterweight bout Saturday at Staples Center.  (Mark J. Terrill / Associated Press)

Jake Ellenberger, left, defeated Josh Koshcheck by submission in the second round of their UFC 184 bout Saturday at Staples Center.  (Harry How / Getty Images)

Tony Ferguson, left, throws a punch at Gleison Tibau on his way to victory by first-round submission during UFC 184 at Staples Center.  (Mark J. Terrill / Associated Press)

Gleison Tibau, left, attempts to kick Tony Ferguson during their UFC 184 bout Saturday at Staples Center.  (Mark J. Terrill / Associated Press)

Roan Carneiro, right, defeated Mark Munoz by submission in the first round of their UFC 184 bout Saturday at Staples Center.  (Harry How / Getty Images)

Roan Carneiro, top, submits Mark Munoz during their middleweight bout at Staples Center on Saturday.  (Harry How / Getty Images)

Norifumi Yamamoto, right, punches Roman Salazar during their UFC 184 bantamweight bout Saturday at Staples Center.   (Harry How / Getty Images)

Valmir Lazaro, right, punches James Krause on his way to a split-decision victory Saturday at Staples Center.  (Harry How / Getty Images)

James Krause kicks Valmir Lazaro during their UFC 184 lightweight bout Saturday at Staples Center.  (Harry How / Getty Images)

Derrick Lewis, left, throws a punch to Ruon Potts during their UFC 184 heavyweight bout Saturday at Staples Center.  (Mark J. Terrill / Associated Press)

Derrick Lewis, top, overcame a shaky start to beat Ruan Potts at Staples Center on Saturday.  (Harry How / Getty Images)

Derrick Lewis defeats Ruan Potts by TKO during their UFC 184 heavyweight bout Saturday at Staples Center.  (Harry How / Getty Images)