He had pretty limited success and retired at the end of 1979 after the loss against Leroy Caldwell.

Pineda retired after the loss, but came back in 1996.

He retired after the loss, with a record of 29-2-0.

He retired after the loss to Cork in 2008 championship due to a lot of injuries.

Velasquez retired after the loss, but had a brief comeback in 1979.

He retired after the loss with 31 wins, 7 losses and 23 wins by knockout.

He retired in 2000, after the loss to Stone, with a career professional record of 18-3-0.

Botile retired after the loss, but came back in 2005, only to be knocked out by Anthony Tshehla.

He retired after the loss to Buchanan in 1971.

He lost the belt in his first defense to Duke McKenzie via decision, and retired after the loss.