Which modern fighters had the quickest sudden fall from their prime?

Roy Jones seems to be the poster boy for this. Although I certainly dont think he was in his prime when he lost to Tarver (I think his peak was probably '94 - 98), he was still viewed as pretty much unbeatable at the time. But he was never same after, and declined very rapidly IMO. He looked absolutely shot to bits in the Glen Johnson fight and should've retired then.

 

Kambosos Jr. Beat Teo pretty handily then got schooled by Haney and became a gatekeeper.

 

Usyk been at the top his whole career?

 

For added context: Kambosos was in his physical prime at the time he beat Lopez, and he then lost his next 4 fights in a row - yes, the Hughes fight was a massive robbery. Kambosos then beat a local kid, and in his next fight got beaten down by Hitchins.
Kambosos was 32 at the time of the Hitchins fight.

In his physical prime, at the championships level, Kambosos went 2-4. I cant imagine him being able to turn this around now.

 

Usyk looked great against Dubois 2, then looked human and mediocre against Rico.

 

Usyk was 39 tho. Cant really claim someone is in their prime at that age, and his physical decline is very noticeable from the WBSS to Joshua, to Dubois 2.

 

Joshua

 

I agree. Tszyu timing was so on point for those two rounds that a knockout was not far fetched to predict. And then it all came tumbling down.

 

Could be he's done, or it could be the long standing tradition of heavyweights who don't care on the night looking like the purest dog**** - whether Fury recently, or Ali against that NFL guy, etc. Guys with big muscles and no cardio right now can be a sorry sight, no matter how much class they may possess.

 

Just popped into my head but who remembers Guillermo Rigondeaux! I remember the hype that was made about him, Mayweather like etc....

 

Jeison Rosario. Wtf happened to him. He's damaged goods lost about 5 or 6 straight could barely throw a punch. He's probably still fighting too. Won a world title in 2020. Got destroyed by Charlo. Aged fast.