5 oldest people to step into an MMA fight

#1 John Williams

John "Gray Wolf" Williams is a member of the Native American tribe, Wabenaki

What do you imagine would be the most taxing part of an average 70-year-old's day? Climbing stairs? Bending to pick something up? Making it to the bathroom? For John Williams, it was to overthrow a man trying to break him inside a cage.

In 2010, at 70 years of age, "Gray Wolf" became the oldest MMA debutant and winner, when he submitted Larry Brewbaker by ankle lock in the second round.

A lifelong martial artist, Williams competed in powerlifting competitions and made his amateur MMA debut in 2000. His amateur record stands at 4 wins, 5 losses. He has not fought professionally since.

In 1987, he reportedly set a world record for most ice blocks broken with a single punch - 10 of them, with each of them 11 inches thick.