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Claudio Puelles extended his winning streak to four fights when he finished Chris Gruetzemacher in the third round at UFC on ESPN 31.       Related StoriesUFC on ESPN 31 video: Claudio Puelles taps Chris Gruetzemacher with late kneebar - EnclosureUFC on ESPN 31 video: Vince Morales becomes first to knock out Louis SmolkaUFC on ESPN 31 video: Vince Morales becomes first to knock out Louis Smolka - Enclosure