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Best Welterweight Bouts in MMA History

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No. 4 -- Robbie Lawler versus Aaron Riley (UFC 37, May 10, 2002)

Photograph By Susumu Nagao

Aaron Riley stepped into his UFC debut in 2002 with a reputation for being able to absorb damage. Robbie Lawler made sure that no one would ever doubt Riley's ability to do so. During the first bout at UFC 37, Lawler and Riley stole the show. Lawler landed monster punches and knees, but Riley kept coming. If you saw this fight, you haven't forgotten it.