5. Megumi Fujii
Fujii was once the standard by which all other female fighters were judged. She won her first 22 fights and finished 19 of them, using armbars, heel hooks, chokes and keylocks while tearing through Shooto and Smackgirl. No one came close to beating her.
Her late-career stumbles notwithstanding, Fujii will go down was one of the all-time great female fighters in MMA history. She completed her career with a stellar 26-3 record, though none of those 29 fights took place inside the Octagon of the UFC.
Number 4 » Ben Askren