He defended the title a total of six times before losing to Antonio Gomez in 1971.

He defended his belt three times before moving up in weight class and losing three straight bouts.

He defended the title seven times before losing the belt in 1999 to Soto who won by a controversial unanimous decision.

He defended the belt twice before losing it to Bruce Curry by decision the following year.

He defended the belt once before losing a close decision to Erik Morales in 2001.

He defended the title twice more, before losing it to Harold Knight in 1987.

He defended the title once before losing it to Konadu in a rematch the following year.

He defended the title 15 times before losing to Harold Dade in 1947.

He defended the belt once before losing it to Robbie Regan the following year.

He eventually defended the title once before losing it to Tim Means.