The 7 biggest and craziest UFC title fight upsets ever!

5. Randy Couture vs. Tim Sylvia, UFC 68, 2007

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When Randy Couture came out of retirement to decisively beat the bigger and thirteen year younger champion Tim Sylvia at UFC 68 it was one of the biggest upsets the sport has ever seen.

The 43-year-old floored the massive champion with the first punch and continued to dominate throughout the five-round fight. After the final bell, the judges scorecards showed Randy winning all five rounds.