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Roman Dolidze trapped Jack Hermansson in a calf slicer position and used it to unload a punishing TKO before calling out Khamzat Chimaev at UFC on ESPN 42.      Related StoriesUFC on ESPN 42 results: Roman Dolidze TKOs Jack Hermansson, calls out Khamzat Chimaev - EnclosurePhil Rowe def. Niko Price at UFC on ESPN 42: Best photosUFC on ESPN 42 video: Eryk Anders smashes Kyle Daukaus for second-round stoppage