In nine fights, six of which were professional, Ronda Rousey has won every single one in the first round with a devastating armbar. Former champion Sarah Kaufman was supposed to be her biggest test to date - but she lastest just 54 seconds against the armbar assassin. And with that, Rousey is the biggest name in MMA at the moment and her meteoric rise is being compared to Mike Tyson's in the 1980s.
Photo by Getty Images Aug 20, 2012
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