At one point in their careers, former Strikeforce middleweight champion Luke Rockhold and his UFC Fight Night 55 opponent, Michael Bisping , trained together. And that’s where their rivalry began. In a 2012 interview on MMA Uncensored Live , Bisping broke a gentleman’s agreement in the sport by talking about what took place in the gym, particularly a sparring session with Rockhold, who was the Strikeforce champion at the time. “Let me put it like this,” said the British middleweight.
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Luke Rockhold Says Michael Bisping is in for a Rude Awakening – MMA Weekly