9. Amanda Nunes (Reigning UFC featherweight champion with 0 title defenses)
UFC bantamweight champion [autotag]Amanda Nunes[/autotag] went up in weight to challenge the unstoppable force, Cris Cyborg, for an attempt to become the first woman in UFC history to hold two titles simultaneously.
It took Nunes only 51 seconds to dispatch Cyborg at UFC 232, when she hurt her early with a counter and put the nail in the coffin with a massive overhand right. It was an outcome nobody saw coming. The victory put her in discussion as the greatest female fighter in history.
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