Ryanhall pointed this article out earlier from the Nashua Telegraph. I got the link to work...
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Smith allegedly approached Kendall as he was walking out of the gas station and demanded the keys, then took a swing at Kendall when he refused to hand them over, Kendall said.

Kendall said he ducked, dropped his java and laid out the other man with a three-punch combo.

“At first, I thought the guy was kidding,” Kendall said. “But he took a swing at me. I said, ‘OK. Showtime.’ ”

Kendall, 37, estimated that Smith, 34, outweighed him by 100 pounds; he weighs 160 and he put Smith at 260. But advantages in size don’t always pay off, especially when the lighter man owns the sports car and says he’s a kickboxer.

“I gave him three shots and he was out cold,” said Kendall, after disappointedly looking over the blood and coffee splattered on his driver’s side door.

Kendall said he hit Smith with a jab and then a left-and-right hook tandem. Blood seeped from Smith’s nose and mouth, Kendall said.

Smith will be charged with felony robbery, punishable by a maximum of 3½ to seven years in prison, Desmond said.

http://www.nashuatelegraph.com/Main....rticleID=89732