Fighters that Ruined others career.

Golota ruined Bowe.

 

Corrales and Castillo ruined each other.
Trinidad ruined Reid.
Green ruined Codrington.

 

chavez>taylor

 

Tito finished David Reid, too.

 

Tszyu ruined Judah. Even though he went on to achieve many things he never really lived up to his obvious talents. Judah's immaturity meant that he never really dealt with the humiliation of the Tszyu KO and it affected the way he fought from then on.

 

I wouldn't put that in the same league as the others mentioned.

 

Cause Calvin Brock was never that good to begin with.

And I don't even think Wlad took too much out of brock anyways. My version of ruined is the fighter can't physically perform like he used to. And on occasion I might make an exception for guys that are really mentally ****ed up after a loss. But just cause a guy was a little bit worse then he used to be doesn't in my mind qualify. Or if he goes off the rails and stops training or loses motivation, thats his own doing.

 

Would Douglas knocking out Tyson count? There was an interview I saw with Tyson where he said something along the lines of he was finished after that fight.

 

He retired because of a retina condition that was not related to his fight with Wladimir.

 

Sticking with the Tito theme, didn't Bernard ruin Trinidad?

We have yet to see, but Vasquez and Marquez may have ruined each other.

 

Lewis > Grant
Tszyu > Judah
Judah > Witter
Calzaghe > Lacy
Trinidad > Vargas
Margarito > Cotto - just see