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Five Biggest Upsets

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No. 2: Fabricio Werdum-Fedor Emelianenko (Strikeforce: Fedor versus Werdum)

Photograph By Jon Kopaloff/Getty Images

Perhaps the only stat you need to know: Emelianenko hadn't lost an MMA fight in more than 10 years prior to stepping into the cage against Werdum on June 26, 2010. Though he'd begun to show signs of slowing down in previous Strikeforce bouts, many still considered "The Last Emperor" to be invincible -- right up to the moment Werdum caught him in a triangle choke and forced him to tap out 1:09 into their fight.