Five Biggest Upsets

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No. 3: Seth Petruzelli-Kimbo Slice (EliteXC: Heat)

Photograph By Dave Mandel for

The house of cards EliteXC had built around Slice unceremoniously crashed down on Oct. 4, 2008, during its third and final network TV broadcast. Following an injury to Slice's scheduled opponent (Ken Shamrock), light heavyweight Petruzelli stepped in on just a few hours' notice against shoot-the-moon odds. It turned out to be a good decision, as Petruzelli toppled Slice's myth -- and by extension, all of EliteXC -- with a short right hand, forcing a stoppage after just 14 seconds.