| http://www.w3.org/ns/prov#value | - He was ranked among the world's top ten heavyweights in the 1970s, fighting such opponents as Muhammad Ali, Joe Frazier, Ron Lyle, Jimmy Ellis, Manuel Ramos, Chuck Wepner, Earnie Shavers, Henry Cooper, Brian London, Mac Foster, Rudi Lubbers, Eduardo Corletti, Jurgen Blin, George Johnson and Jose Luis Garcia.
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