LAS VEGAS -- Ronda Rousey's most dangerous weapon is still the armbar -- we think.
Rousey (10-0) finished her second consecutive fight via knockout at UFC 175 on Saturday night, needing only 16 seconds to put away No. 1 contender Alexis Davis at the Mandalay Bay Events Center.
The finish was the second-fastest knockout in UFC title bout history, behind Andrei Arlovski's 15-second finish of Paul Buentello at UFC 55 in October 2005. The win also handed Rousey, 27, her fourth consecutive UFC bantamweight title defense.
"I box six days a week and grapple four days a week," Rousey said. "I have more to catch up on striking, so I do that the most."
The finishing sequence was a beautiful display of the progress Rousey has made on her feet. The former Olympic judoka, who finished her first eight professional fights via armbar, scored a right hand to Davis' chin and then a knee to the midsection.
As Davis (16-6) doubled over from the strikes, Rousey, 27, threw her to the floor in the center of the Octagon and started unloading right hands from a side control headlock. Davis went noticeably limp after one of them, which prompted referee Yves Lavigne to stop the fight.
Rousey admitted after the fight she was dealing with a sore right knee and a cyst that had developed on her right hand.
"It turns out from my last two camps at (UFC) 168 and 170 I kept ripping my knuckle open," she said. "I kept covering it up and hitting on it still, just making sure it didn't get infected. I guess I ended up building a cyst under my knuckle.
"I ripped it open in the first overhand right. I just got nine stitches. The knee surgery is just something more maintenance. I need to do it. It's not really major knee surgery at all. I literally walk out and in about two weeks I'm 100 percent."
It marked the first time Davis has been stopped since January 2009.
"We had been specifically working on the long overhand right and long left hook in this training camp," Rousey said. "Before my fight with Sara McMann, we had been training the inside knee to the body. It just seems that whatever I'm working on in training camp I have implemented effectively in the fight."
The 16-second finish will only drop Rousey's average fight time, which was already a brief 2:44 headed into her fourth title defense. In her last fight at UFC 170 in February, Rousey stopped Sara McMann at the 1:06 mark after a knee to the body.
Following Saturday night's bout, Rousey, who has claimed she would accept any fight on 24 hours' notice, was asked if she was interested in fighting at UFC 176 in Los Angeles on Aug. 2.
The attendance was 10,088 with a live gate of $4.4 million.
A main event between featherweight champion Jose Aldo and Chad Mendes was scrapped recently from the card, due to an Aldo injury. Rousey said she is scheduled to undergo minor knee surgery but would still consider it. UFC president Dana White appeared to shake his head no as she said it.
For at least one night, Uriah Hall seemed to have fixed his "too nice" problem.