which of these 2 Biggest Heavyweight upsets really made the biggest impact in boxing history?
Muhammad Ali (then was known as Cassius Clay) was clearly the underdog v.s sonny liston
James douglas was an underdog v.s tyson in 1990
Muhammad Ali (then was known as Cassius Clay) was clearly the underdog v.s sonny liston
James douglas was an underdog v.s tyson in 1990
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