However, St-Pierre explained it as more a use of epic karate skills to take out his opponent.
"I knew he was good in boxing range and I wanted to stay out of his boxing range," St-Pierre said. "I used my karate."
St-Pierre and Diaz had been talking trash back and forth in the lead-up to UFC 158, but the beef appears to be squashed.
"I want to thank Georges St-Pierre for giving me the credit I think I deserve," Diaz said. "I apologize to my hometown, Stockton, [Calif.]"
In other UFC 158 matters, Johny Hendricks took care of Carlos Condit in a wacky back-and-forth battle.
"I want GSP next if he wins this fight," Hendricks said after he beat Condit at UFC 158. " ... I have more than earned it. What did GSP do to earn his two title shots? What did Diaz do? Lose a fight to the guy I just beat. GSP didn't go through the contenders like I did. I have beaten the same guys way more impressively than he has. Condit didn't knock me down but he had GSP out.
"I'm banged up but I will be ready whenever he is. He can fight me here in Montreal, or any arena anywhere in the world. That, or I grab Dana White, I hire the Octagon myself, I hire a ref and I show up at his house, ring the door bell and we fight right there on his porch. He's got nowhere to hide now."