Best quality opposition in...

and afterwards.


But to answer the thread Oscar De La Hoya.

He's taken on some big names

 

You got to give DLH credit, win or lose, when other fighters try to get fights that always fall though(I looking at you Heavyweights) DLH always gets the big fights done, vs Chavez, Mayweather, Hopkins, Vargas, Sweet Pea, ete.

 

Sugar Ray Leonard.

 

The former WBA light-middleweight champion Davey Moore deserves a mention.

He finished his career (died prematurely in a freak accident at home) with something like 23 professional fights.
He fought Duran, Benitez, Ayub Kalule, Buster Drayton and other men who were champions or top contenders in the 154 division.

 

Tho not super short, and maybe behind Ray, Hearn's efforts are decent as well among more modern day fighters. Leonard, Hagler, Benitez, Duran, Cuevas, Hill etc. Hearn's fringe bouts outside the big 4 are possibly stronger.