MMA Fighting’s Ariel Helwani and Shaun Al-Shatti take a closer look at the top storylines heading into Saturday night’s UFC 178, including UFC flyweight champion Demetrious Johnson defending his title against Chris Cariaso. In the co-main event, Donald Cerrone welcomes Eddie Alvarez to the UFC, and Conor McGregor faces rival Dustin Poirier on the main card.
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