Originally posted on Fox Sports  |  Last updated 10/27/11
This list of professional athletes who have tried to transition from their sport into mixed martial arts is long but not too distinguished. Jose Canseco, for one. The retired baseball slugger-slash-steroid proponent was knocked out in 77 seconds in his MMA debut in Japan a couple of years ago. Canseco hurt his knee, and his girlfriend had to help him out of the ring. He has yet to make a second appearance. Former Detroit Lions wide receiver Johnnie Morton was knocked out in 38 seconds in his only MMA fight. Former NFL star Herschel Walker decisively won his first two fights and has talked of continuing his MMA moonlighting, but the dude's 49 years old -- no spring chicken for MMA, or any other sport this side of chess, for that matter. Then there's Matt Mitrione. Since retiring from the NFL, the former New York Giants and Minnesota Vikings defensive tackle has risen through the MMA ranks: competing on the 10th season of "The Ultimate Fighter" and earning the nickname "Meathead," ...
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