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Column: Floyd Mayweather, Rocky Marciano and why 48, 49 and 50-0 have little significance - mlive.com
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The tragic death of legendary heavyweight Rocky Marciano and why it could have been avoided - Mirror Online
If Rocky Marciano made his professional debut in 1985, would he still have retired as champion with an undefeated record? - Quora
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Rocky Marciano's Legendary 49-0 Record: For It To Be Truly Broken, Must It Be A Reigning Heavyweight Champion Who Reaches 50-0? - Boxing News
Sports Heroes Who Served: Undefeated Boxing Champ Served in World War II > U.S. Department of Defense > Story
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Rocky Marciano's record has been equalled but the love and awe he inspired will always leave him out of reach of others - Steve Bunce | The Independent | The Independent
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