It's a simple question.

There have been thousands of world champions but very few who never lost any of the titles they won in the ring in the ring.

Two examples John Conteh - stripped of the WBC Light Heavyweight title but never lost the title he won in the ring.

Jeff Fenech IBF Bantamweight, WBC Super Bantamweight & WBC Featherweight also never lost any of his titles in the ring.

How many more can people name