Amir Khan and Briedes Prescott. Khan got sparked in the first round and went on to having much brighter career than prescott
Joe Chip Ko2 Harry Greb Must be noted the young Greb (7th fight) was fighting a heavier fighter (15 pounds) and more experienced (18 bouts) opponent.. They rematched 6 years later at the same weight and Greb won a comfortable Newspaper decision.
Let's be honest, we all thought Joe Joyce was going to do more than Dubois. Good on Daniel though, I didn't think he had it in him.
There must have been loads and loads of boxers, who were badly beaten early on - but rebounded to achieve great things. Too many to mention, really... but if we narrow it down to future world champs, who were stopped already in their pro debut, we can mention guys such as: Freddy Castillo Miguel Canto Rafael Marquez Henry Armstrong Benny Leonard Pipino Cuevas Tommy Freeman Willie Ritchie ... just to name a few!
Kllisschko- Purrity and Sanders Barkley ( Saquon's Uncle) Knocked out in a slug fest versus Robbie Simms and goes on to being Champion and defeating Hearns twice
Max Schmeling was KO'd early by Gaines and Daniels. Went on to become HW world champion, and KO'd Joe Louis
Bowe beating Holyfield in their 3rd fight everyone thought it was the end for Holyfield but infact he comeback with the best win of his career over Tyson and is now more highly rated than Bowe in the ATG Heavyweight rankings. Junior Jones knocking out Barrera whilst Jones had a good career he never got close to the heights that Barrera achieved.