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ATLANTIC CITY, UNITED STATES: WBC heavyweight champion Lennox Lewis of Britain (L) lands a punch to the back of the head of Shannon Briggs of the United States during the second round of their 12-round title fight at the Atlantic City Convention Center, NJ, 28 March. Lewis won on a TKO in the fifth round to retain his title. AFP PHOTO Timothy A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP via Getty Images)

ATLANTIC CITY, UNITED STATES:  WBC heavyweight champion Lennox Lewis of Britain (L) lands a punch to the back of the head of Shannon Briggs of the United States during the second round of their 12-round title fight at the Atlantic City Convention Center, NJ, 28 March. Lewis won on a TKO in the fifth round to retain his title.  AFP PHOTO   Timothy A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP via Getty Images)