Which fighter has the most impressive back to back wins in boxing history

Big difference that might have escaped you is that in the examples you gave of Charles, Duran, Liston, etc those guys notched at least one win against a great fighter. Your pet eurotrash favorites cant say that and the fact that you are forced to lump an amateur win over Torres in with professional a accolades to inflate their accomplishments illustrates my point that they have ludicrously weak resumes perfectly.

 

One is solely hof because he beat Ali.

 

Ward beat Kessler, Allan Green, Bika, Abraham, Froch, and Dawson consecutively.

 

Liston also had a short run where he looked unstoppable