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Well, it's a possibility. I won't say it's not possible that Machida will get knocked out, but I think it's highly unlikely that he will just stand there like Chuck and receive a right hook to the face. And I don't think Chuck's and Machida's elusiveness are alike, Machida is MUCH faster and has been training MMA much longer than Chuck has (and Evans for that matter).
As for betting on this fight... I wouldn't feel good putting money on either of them.