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SHEFFIELD, ENGLAND - MAY 27: Kell Brook (L) in action against Errol Spence JR during their IBF Welterweight World Championship contest at Bramall Lane on May 27, 2017 in Sheffield, England. (Photo by Nigel Roddis/Getty Images)

SHEFFIELD, ENGLAND - MAY 27:    Kell Brook (L) in action against Errol Spence JR during their IBF Welterweight World Championship contest at Bramall Lane on May 27, 2017 in Sheffield, England. (Photo by Nigel Roddis/Getty Images)