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9) Holly Holm KOs Ronda Rousey (9 of 12)
9) Holly Holm KOs Ronda Rousey (9 of 12)
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No one is unbeatable when it comes to martial arts. And this was proved when Ronda Rousey faced a shock defeat at the hands of former world boxing champion Holly Holm who scored a huge upset by knocking out Rousey with a left head kick.
This occurred in the second round and Holly Holm was able to win the bantamweight championship fight resultantly.