What are some big wins that great fighters got early in their careers?

Does Pacquiao's win over Sasakul count?

I mean its not two years since turning into a pro, but he was still unknown at that time.

 

PBF over Genaro Hernandez.

 

Michael Carbajal beat Will Grigsby in his professional debut.

 

Duran's victories over both Marcel and Buchanan.Both victories were before his 22nd birthday.

 

Sugar Ray Robinson beat reigning lightweight title holder Sammy Angott, former welterweight champion Fritzie Zivic and 42-0 future welterweight champion Marty Servo during his first year as a pro.

Jimmy Bivins beat Charley Burley 8 months after turning pro.

 

buster mathis beat chuck wepner in his 4th or 5th fight..

 

Leonard beat Benitez when he was about 26-0. I guess that can be considered an early win but Ray retired with 40 fights. Many people don't do that anymore they usually fight more.

 

It doesn't count, but Lewis TKO'd Bowe before turning pro.

 

A bull**** TKO. Terrible decision.

 

ernie shavers beat jimmy young and jimmy ellis early on

 

Not a great fighter but henry cooper did well to beat Folley early enough in his career

 

dunno if this is too far into his career to count....but lennox lewis v razor ruddock.

 

McLarnin vs LaBarba

 

ezzard charles two wins over charley burley and first two wins over joey maxim and first win against archie moore all came very early on for him.