#2 Mark Hunt
New Zealander, Mark Hunt first burst on the MMA scene in Pride FC, wherein he defeated the legendary Wanderlei Silva and Mirko Cro Cop.
Those wins were enough to earn him a Heavyweight title bout with long reigning Champion, Fedor Emelianenko. Hunt lost that one but earned plaudits for his performance against the near unbeatable Russian.
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Hunt lost his UFC debut fight versus the giant Sean McCorkle but rebounded to win four in a row which included huge wins over superstars Cheick Kongo and Stefan Struve.
Hunt's recent record has been mixed but did include notable victories over former UFC Heavyweight Champion, Frank Mir and contenders Roy Nelson and "Bigfoot" Silva.
However, Hunt's past two UFC bouts have ended in decisive losses, most recently at UFC Fight Night 136 when he was submitted by Alexey Oleinik.
Hunt, at 44 years of age has clearly seen better days. It's time for this legend to hang up his gloves for good.