Most impressive win in the history of boxing?

In my opinion...the biggest upset in the history of sports...bigger than Douglas vs Tyson .....because at least Douglas vs Tyson makes since in hindsight

 

Ruben was heavily favored to win that fight. The perception was that all of Rose’s title fights were close, he went down a few times and Olivares was an irresistible knockout force.

 

The title is " most impressive in boxing history " honestly don't see the win over Rose in that category, Olivares was something like 50-0-01 with around 47 KOs, he was the most exciting and feared Bantam of the late 60s, I haven't looked up the odds or who was the favourite, but would be mildly surprised if it was Rose , but as always on this site, you pays your money, and takes your pick . stay safe buddy.

 

Didn't see your post before mine ChrisJS.

 

Some to throw in the mix but not in the history maybe.
Norton Ali 1
Benitez Cervantes
DeJesus Duran 1
Backus Napoles
Braddock Bear
Shibata Saldivar
stay safe guys.

 

Randy Turpin was the 1st boxer to ever beat Sugar Ray in 11 years as a pro that didn't have a significant weight pull.
Turpin didn't have longevity because mainly personal problems but at that short peak he was nightmare for many.

 

Zárate was also favorite over Rodolfo Martinez, despite Martinez’s stronger resume up to that point in time. In Mexico and LA, nobody gave Lionel much chance against Olivares.

 

While it wasn't boxing's biggest upset ever, I certainly agree with you that is was the most impressive win in the history of boxing. Big George came back, in his second career, and won the Lineal Heavyweight Championship of the World. What a grand accomplishment!

 

The eye test can go a long way.

 

Coming into Olivares-Rose, Ruben had comprehensively beaten Medel (although older), Sakurai by KO (he’d given Rose a close fight), Kanazawa, Octavio Gomez (an excellent fighter) and Salvatore Burruni (former champ), Harada’s brother, so he was definitely battle tested.